diff --git a/rpcs3/basic_keyboard_handler.h b/rpcs3/basic_keyboard_handler.h
index 6ce0fa8e77..ca8414c754 100644
--- a/rpcs3/basic_keyboard_handler.h
+++ b/rpcs3/basic_keyboard_handler.h
@@ -1,5 +1,4 @@
-#ifndef BASIC_KEYBOARD_HANDLER_H
-#define BASIC_KEYBOARD_HANDLER_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/Io/KeyboardHandler.h"
@@ -22,5 +21,3 @@ public:
 private:
 	QObject* m_target;
 };
-
-#endif
diff --git a/rpcs3/basic_mouse_handler.h b/rpcs3/basic_mouse_handler.h
index dd4166e994..9c3a95c3ae 100644
--- a/rpcs3/basic_mouse_handler.h
+++ b/rpcs3/basic_mouse_handler.h
@@ -1,5 +1,4 @@
-#ifndef BASIC_MOUSE_HANDLER_H
-#define BASIC_MOUSE_HANDLER_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/Io/MouseHandler.h"
@@ -24,5 +23,3 @@ public:
 private:
 	QObject* m_target;
 };
-
-#endif
diff --git a/rpcs3/mm_joystick_handler.h b/rpcs3/mm_joystick_handler.h
index 9ee283de52..81aa331eef 100644
--- a/rpcs3/mm_joystick_handler.h
+++ b/rpcs3/mm_joystick_handler.h
@@ -1,5 +1,4 @@
-#ifndef MM_JOYSTICK_HANDLER_H
-#define MM_JOYSTICK_HANDLER_H
+#pragma once
 
 #include "Emu/Io/PadHandler.h"
 #include <Windows.h>
@@ -71,5 +70,3 @@ private:
 	JOYINFOEX    js_info;
 	JOYCAPS   js_caps;
 };
-
-#endif
diff --git a/rpcs3/rpcs3_app.h b/rpcs3/rpcs3_app.h
index 7bf88f478a..1864c27e03 100644
--- a/rpcs3/rpcs3_app.h
+++ b/rpcs3/rpcs3_app.h
@@ -1,5 +1,4 @@
-#ifndef RPCS3_APP_H
-#define RPCS3_APP_H
+#pragma once
 
 #include "stdafx.h"
 
@@ -31,14 +30,14 @@ public:
 	/** Call this method before calling app.exec
 	*/
 	void Init();
-signals:
+Q_SIGNALS:
 	void OnEmulatorRun();
 	void OnEmulatorPause();
 	void OnEmulatorResume();
 	void OnEmulatorStop();
 	void OnEmulatorReady();
 	void RequestCallAfter(const std::function<void()>& func);
-private slots:
+private Q_SLOTS:
 	void OnChangeStyleSheetRequest(const QString& path);
 	void HandleCallAfter(const std::function<void()>& func);
 	void ResetPads();
@@ -53,4 +52,3 @@ private:
 
 	main_window* RPCS3MainWin;
 };
-#endif
diff --git a/rpcs3/rpcs3qt/audio_tab.h b/rpcs3/rpcs3qt/audio_tab.h
index 2d9b8ca1f7..d3755769f0 100644
--- a/rpcs3/rpcs3qt/audio_tab.h
+++ b/rpcs3/rpcs3qt/audio_tab.h
@@ -1,5 +1,4 @@
-#ifndef AUDIOTAB_H
-#define AUDIOTAB_H
+#pragma once
 
 #include "emu_settings.h"
 
@@ -13,10 +12,4 @@ class audio_tab : public QWidget
 
 public:
 	explicit audio_tab(std::shared_ptr<emu_settings> xemu_settings, QWidget *parent = 0);
-
-signals:
-
-public slots:
 };
-
-#endif // AUDIOTAB_H
diff --git a/rpcs3/rpcs3qt/auto_pause_settings_dialog.h b/rpcs3/rpcs3qt/auto_pause_settings_dialog.h
index 6e268ab35f..c133dfbdec 100644
--- a/rpcs3/rpcs3qt/auto_pause_settings_dialog.h
+++ b/rpcs3/rpcs3qt/auto_pause_settings_dialog.h
@@ -1,5 +1,4 @@
-#ifndef AUTOPAUSESETTINGSDIALOG_H
-#define AUTOPAUSESETTINGSDIALOG_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/System.h"
@@ -40,9 +39,9 @@ public:
 	void LoadEntries(void);
 	void SaveEntries(void);
 
-public slots :
+public Q_SLOTS:
 	void OnRemove();
-private slots :
+private Q_SLOTS:
 	void ShowContextMenu(const QPoint &pos);
 	void keyPressEvent(QKeyEvent *event);
 };
@@ -61,10 +60,8 @@ class AutoPauseConfigDialog : public QDialog
 public:
 	explicit AutoPauseConfigDialog(QWidget* parent, auto_pause_settings_dialog* apsd, bool newEntry, u32* entry);
 
-private slots :
+private Q_SLOTS:
 	void OnOk();
 	void OnCancel();
 	void OnUpdateValue();
 };
-
-#endif // AUTOPAUSESETTINGSDIALOG_H
diff --git a/rpcs3/rpcs3qt/cg_disasm_window.h b/rpcs3/rpcs3qt/cg_disasm_window.h
index f10e1aa2ff..3629543808 100644
--- a/rpcs3/rpcs3qt/cg_disasm_window.h
+++ b/rpcs3/rpcs3qt/cg_disasm_window.h
@@ -1,5 +1,4 @@
-#ifndef CGDISASMWINDOW_H
-#define CGDISASMWINDOW_H
+#pragma once
 
 #include <QTextEdit>
 #include <QDropEvent>
@@ -11,7 +10,7 @@ class cg_disasm_window : public QWidget
 {
 	Q_OBJECT
 
-private slots:
+private Q_SLOTS:
 	void ShowContextMenu(const QPoint &pos);
 	void ShowDisasm();
 	bool IsValidFile(const QMimeData& md, bool save = false);
@@ -35,5 +34,3 @@ protected:
 	void dragMoveEvent(QDragMoveEvent* ev);
 	void dragLeaveEvent(QDragLeaveEvent* ev);
 };
-
-#endif	// CGDISASMWINDOW_H
diff --git a/rpcs3/rpcs3qt/core_tab.h b/rpcs3/rpcs3qt/core_tab.h
index 2351091f0a..28c5837fb1 100644
--- a/rpcs3/rpcs3qt/core_tab.h
+++ b/rpcs3/rpcs3qt/core_tab.h
@@ -1,5 +1,4 @@
-#ifndef CORETAB_H
-#define CORETAB_H
+#pragma once
 
 #include "emu_settings.h"
 
@@ -15,7 +14,7 @@ class core_tab : public QWidget
 
 public:
 	explicit core_tab(std::shared_ptr<emu_settings> xSettings, QWidget *parent = 0);
-public slots:
+public Q_SLOTS:
 	void SaveSelectedLibraries();
 
 private:
@@ -25,5 +24,3 @@ private:
 
 	std::shared_ptr<emu_settings> xemu_settings;
 };
-
-#endif // CORETAB_H
diff --git a/rpcs3/rpcs3qt/debugger_frame.h b/rpcs3/rpcs3qt/debugger_frame.h
index e1be8cc10f..59e86880af 100644
--- a/rpcs3/rpcs3qt/debugger_frame.h
+++ b/rpcs3/rpcs3qt/debugger_frame.h
@@ -1,5 +1,4 @@
-#ifndef DEBUGGERFRAME_H
-#define DEBUGGERFRAME_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/Memory/Memory.h"
@@ -79,11 +78,11 @@ protected:
 	/** Override inherited method from Qt to allow signalling when close happened.*/
 	void closeEvent(QCloseEvent* event);
 
-signals:
+Q_SIGNALS:
 	void DebugFrameClosed();
-public slots:
+public Q_SLOTS:
 	void DoStep();
-private slots:
+private Q_SLOTS:
 	void OnSelectUnit();
 	void Show_Val();
 	void Show_PC();
@@ -116,5 +115,3 @@ protected:
 	void wheelEvent(QWheelEvent* event);
 	void resizeEvent(QResizeEvent* event);
 };
-
-#endif // DEBUGGERFRAME_H
diff --git a/rpcs3/rpcs3qt/emu_settings.h b/rpcs3/rpcs3qt/emu_settings.h
index e1b70028fc..a917a96747 100644
--- a/rpcs3/rpcs3qt/emu_settings.h
+++ b/rpcs3/rpcs3qt/emu_settings.h
@@ -1,5 +1,4 @@
-#ifndef EMU_SETTINGS_H
-#define EMU_SETTINGS_H
+#pragma once
 
 #include "Utilities/File.h"
 #include "Utilities/Log.h"
@@ -124,7 +123,7 @@ public:
 
 	/** Sets the setting type to a given value.*/
 	void SetSetting(SettingsType type, const std::string& val);
-public slots:
+public Q_SLOTS:
 /** Writes the unsaved settings to file.  Used in settings dialog on accept.*/
 	void SaveSettings();
 private:
@@ -197,5 +196,3 @@ private:
 	YAML::Node currentSettings; // The current settings as a YAML node.
 	fs::file config; //! File to read/write the config settings.
 };
-
-#endif
diff --git a/rpcs3/rpcs3qt/game_list_frame.h b/rpcs3/rpcs3qt/game_list_frame.h
index 10eb952e9d..0eabf43996 100644
--- a/rpcs3/rpcs3qt/game_list_frame.h
+++ b/rpcs3/rpcs3qt/game_list_frame.h
@@ -1,5 +1,4 @@
-#ifndef GAMELISTFRAME_H
-#define GAMELISTFRAME_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/GameInfo.h"
@@ -58,14 +57,14 @@ public:
 	/** Saves settings. Public so that main frame can save this when a caching of column widths is needed for settings backup */
 	void SaveSettings();
 
-public slots:
+public Q_SLOTS:
 	/** Resize Gamelist Icons to size */
 	void ResizeIcons(const QSize& size, const int& idx);
 	void SetListMode(const bool& isList);
 	void SetToolBarVisible(const bool& showToolBar);
 	void SetCategoryActIcon(const int& id, const bool& active);
 
-private slots:
+private Q_SLOTS:
 	void Boot(int row);
 	void RemoveCustomConfiguration(int row);
 	void OnColClicked(int col);
@@ -73,7 +72,7 @@ private slots:
 	void ShowContextMenu(const QPoint &pos);
 	void ShowSpecifiedContextMenu(const QPoint &pos, int index); // Different name because the notation for overloaded connects is messy
 	void doubleClickedSlot(const QModelIndex& index);
-signals:
+Q_SIGNALS:
 	void game_list_frameClosed();
 	void RequestIconPathSet(const std::string path);
 	void RequestAddRecentGame(const q_string_pair& entry);
@@ -149,5 +148,3 @@ private:
 
 	uint m_games_per_row = 0;
 };
-
-#endif // GAMELISTFRAME_H
diff --git a/rpcs3/rpcs3qt/game_list_grid.h b/rpcs3/rpcs3qt/game_list_grid.h
index 2a27cf22cd..644aec9def 100644
--- a/rpcs3/rpcs3qt/game_list_grid.h
+++ b/rpcs3/rpcs3qt/game_list_grid.h
@@ -1,5 +1,4 @@
-#ifndef GAME_LIST_GRID_H
-#define GAME_LIST_GRID_H
+#pragma once
 
 #include "game_list_grid_delegate.h"
 
@@ -32,5 +31,3 @@ public:
 private:
 	game_list_grid_delegate* grid_item_delegate; 
 };
-
-#endif
\ No newline at end of file
diff --git a/rpcs3/rpcs3qt/graphics_tab.h b/rpcs3/rpcs3qt/graphics_tab.h
index 95af7664ca..90a330dcda 100644
--- a/rpcs3/rpcs3qt/graphics_tab.h
+++ b/rpcs3/rpcs3qt/graphics_tab.h
@@ -1,5 +1,4 @@
-#ifndef GRAPHICSTAB_H
-#define GRAPHICSTAB_H
+#pragma once
 
 #include "emu_settings.h"
 
@@ -14,13 +13,9 @@ class graphics_tab : public QWidget
 public:
 	explicit graphics_tab(std::shared_ptr<emu_settings> xemu_settings, Render_Creator r_Creator, QWidget *parent = 0);
 
-signals:
-
 private:
 	std::shared_ptr<emu_settings> xemu_settings;
 	QString m_oldRender = "";
 	bool m_isD3D12 = false;
 	bool m_isVulkan = false;
 };
-
-#endif // GRAPHICSTAB_H
diff --git a/rpcs3/rpcs3qt/gs_frame.h b/rpcs3/rpcs3qt/gs_frame.h
index 033e288213..bf7b95ceb7 100644
--- a/rpcs3/rpcs3qt/gs_frame.h
+++ b/rpcs3/rpcs3qt/gs_frame.h
@@ -1,5 +1,4 @@
-#ifndef GSFRAME_H
-#define GSFRAME_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/RSX/GSRender.h"
@@ -41,8 +40,6 @@ protected:
 	int client_height() override;
 
 	void hideEvent(QHideEvent* ev) override;
-private slots:
+private Q_SLOTS:
 	void HandleCursor(QWindow::Visibility visibility);
 };
-
-#endif
diff --git a/rpcs3/rpcs3qt/gui_settings.h b/rpcs3/rpcs3qt/gui_settings.h
index 6e01a645ee..b41068601c 100644
--- a/rpcs3/rpcs3qt/gui_settings.h
+++ b/rpcs3/rpcs3qt/gui_settings.h
@@ -1,5 +1,4 @@
-#ifndef GUI_SETTINGS_H
-#define GUI_SETTINGS_H
+#pragma once
 
 #include "Utilities/Log.h"
 
@@ -133,7 +132,7 @@ public:
 	QStringList GetStylesheetEntries();
 	QStringList GetGameListCategoryFilters();
 
-public slots:
+public Q_SLOTS:
 	void Reset(bool removeMeta = false);
 
 	/** Write value to entry */
@@ -153,5 +152,3 @@ private:
 	QSettings settings;
 	QDir settingsDir;
 };
-
-#endif
diff --git a/rpcs3/rpcs3qt/gui_tab.h b/rpcs3/rpcs3qt/gui_tab.h
index 879b7a59fe..f0dbcba600 100644
--- a/rpcs3/rpcs3qt/gui_tab.h
+++ b/rpcs3/rpcs3qt/gui_tab.h
@@ -1,5 +1,4 @@
-#ifndef GUITAB_H
-#define GUITAB_H
+#pragma once
 
 #include "gui_settings.h"
 
@@ -21,13 +20,13 @@ class gui_tab : public QWidget
 public:
 	explicit gui_tab(std::shared_ptr<gui_settings> guiSettings, QWidget *parent = 0);
 
-public slots:
+public Q_SLOTS:
 	void Accept();
-signals:
+Q_SIGNALS:
 	void GuiSettingsSyncRequest();
 	void GuiSettingsSaveRequest();
 	void GuiStylesheetRequest(const QString& path);
-private slots:
+private Q_SLOTS:
 	void OnResetDefault();
 	void OnBackupCurrentConfig();
 	void OnApplyConfig();
@@ -44,5 +43,3 @@ private:
 
 	std::shared_ptr<gui_settings> xgui_settings;
 };
-
-#endif // GUITAB_H
diff --git a/rpcs3/rpcs3qt/input_tab.h b/rpcs3/rpcs3qt/input_tab.h
index 3b4f7b9d02..0da182ddfe 100644
--- a/rpcs3/rpcs3qt/input_tab.h
+++ b/rpcs3/rpcs3qt/input_tab.h
@@ -1,5 +1,4 @@
-#ifndef INPUTTAB_H
-#define INPUTTAB_H
+#pragma once
 
 #include "emu_settings.h"
 
@@ -13,10 +12,4 @@ class input_tab : public QWidget
 
 public:
 	explicit input_tab(std::shared_ptr<emu_settings> xemu_settings, QWidget *parent = 0);
-
-signals:
-
-public slots:
 };
-
-#endif // INPUTTAB_H
diff --git a/rpcs3/rpcs3qt/instruction_editor_dialog.h b/rpcs3/rpcs3qt/instruction_editor_dialog.h
index 2dd0ae8fc1..a1abd598f1 100644
--- a/rpcs3/rpcs3qt/instruction_editor_dialog.h
+++ b/rpcs3/rpcs3qt/instruction_editor_dialog.h
@@ -1,6 +1,4 @@
-
-#ifndef INSTRUCTIONEDITOR_H
-#define INSTRUCTIONEDITOR_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/System.h"
@@ -33,5 +31,3 @@ public:
 
 	void updatePreview();
 };
-
-#endif // !INSTRUCTIONEDITOR_H
diff --git a/rpcs3/rpcs3qt/kernel_explorer.h b/rpcs3/rpcs3qt/kernel_explorer.h
index 4d9861259a..b4c10095e4 100644
--- a/rpcs3/rpcs3qt/kernel_explorer.h
+++ b/rpcs3/rpcs3qt/kernel_explorer.h
@@ -1,5 +1,4 @@
-#ifndef KERNELEXPLORER_H
-#define KERNELEXPLORER_H
+#pragma once
 
 #include <QDialog>
 #include <QVBoxLayout>
@@ -15,8 +14,6 @@ class kernel_explorer : public QDialog
 
 public:
 	kernel_explorer(QWidget* parent);
-private slots:
+private Q_SLOTS:
 	void Update();
 };
-
-#endif // KERNELEXPLORER_H
diff --git a/rpcs3/rpcs3qt/log_frame.h b/rpcs3/rpcs3qt/log_frame.h
index 049185c542..830b11f75d 100644
--- a/rpcs3/rpcs3qt/log_frame.h
+++ b/rpcs3/rpcs3qt/log_frame.h
@@ -1,5 +1,4 @@
-#ifndef LOGFRAME_H
-#define LOGFRAME_H
+#pragma once
 
 #include "Utilities/File.h"
 #include "Utilities/Log.h"
@@ -23,12 +22,12 @@ public:
 
 	/** Loads from settings. Public so that main_window can call this easily. */
 	void LoadSettings();
-signals:
+Q_SIGNALS:
 	void log_frameClosed();
 protected:
 	/** Override inherited method from Qt to allow signalling when close happened.*/
 	void closeEvent(QCloseEvent* event);
-private slots:
+private Q_SLOTS:
 	void UpdateUI();
 private:
 	void SetLogLevel(logs::level lev);
@@ -58,5 +57,3 @@ private:
 
 	std::shared_ptr<gui_settings> xgui_settings;
 };
-
-#endif // LOGFRAME_H
diff --git a/rpcs3/rpcs3qt/main_window.h b/rpcs3/rpcs3qt/main_window.h
index 7a53195799..a06023300c 100644
--- a/rpcs3/rpcs3qt/main_window.h
+++ b/rpcs3/rpcs3qt/main_window.h
@@ -1,5 +1,4 @@
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
+#pragma once
 
 #ifdef _WIN32
 #include <QWinTaskbarProgress>
@@ -57,17 +56,17 @@ public:
 	void CreateThumbnailToolbar();
 	QIcon GetAppIcon();
 
-signals:
+Q_SIGNALS:
 	void RequestGlobalStylesheetChange(const QString& sheetFilePath);
 
-public slots:
+public Q_SLOTS:
 	void OnEmuStop();
 	void OnEmuRun();
 	void OnEmuResume();
 	void OnEmuPause();
 	void OnEmuReady();
 
-private slots:
+private Q_SLOTS:
 	void BootElf();
 	void BootGame();
 	void InstallPkg();
@@ -150,5 +149,3 @@ private:
 	game_list_frame *gameListFrame;
 	std::shared_ptr<gui_settings> guiSettings;
 };
-
-#endif // MAINWINDOW_H
diff --git a/rpcs3/rpcs3qt/memory_string_searcher.h b/rpcs3/rpcs3qt/memory_string_searcher.h
index f9ba4580dd..4f9aaab868 100644
--- a/rpcs3/rpcs3qt/memory_string_searcher.h
+++ b/rpcs3/rpcs3qt/memory_string_searcher.h
@@ -1,5 +1,4 @@
-#ifndef MEMORYSTRINGSEARCHER_H
-#define MEMORYSTRINGSEARCHER_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/Memory/Memory.h"
@@ -22,8 +21,6 @@ class memory_string_searcher : public QDialog
 public:
 	memory_string_searcher(QWidget* parent);
 
-private slots:
+private Q_SLOTS:
 	void OnSearch();
 };
-
-#endif // MEMORYSTRINGSEARCHER_H
diff --git a/rpcs3/rpcs3qt/memory_viewer_panel.h b/rpcs3/rpcs3qt/memory_viewer_panel.h
index 5d65685618..7252e4eef0 100644
--- a/rpcs3/rpcs3qt/memory_viewer_panel.h
+++ b/rpcs3/rpcs3qt/memory_viewer_panel.h
@@ -1,5 +1,4 @@
-#ifndef MEMORYVIEWER_H
-#define MEMORYVIEWER_H
+#pragma once
 
 #include <QDialog>
 #include <QLineEdit>
@@ -55,5 +54,3 @@ public:
 	//Static methods
 	static void ShowImage(QWidget* parent, u32 addr, int mode, u32 sizex, u32 sizey, bool flipv);
 };
-
-#endif // !MEMORYVIEWER_H
diff --git a/rpcs3/rpcs3qt/misc_tab.h b/rpcs3/rpcs3qt/misc_tab.h
index 8b1530600d..bf50049d2c 100644
--- a/rpcs3/rpcs3qt/misc_tab.h
+++ b/rpcs3/rpcs3qt/misc_tab.h
@@ -1,5 +1,4 @@
-#ifndef MISCTAB_H
-#define MISCTAB_H
+#pragma once
 
 #include "emu_settings.h"
 
@@ -14,5 +13,3 @@ class misc_tab : public QWidget
 public:
 	explicit misc_tab(std::shared_ptr<emu_settings> xemu_settings, QWidget *parent = 0);
 };
-
-#endif // MISCTAB_H
diff --git a/rpcs3/rpcs3qt/msg_dialog_frame.h b/rpcs3/rpcs3qt/msg_dialog_frame.h
index 2a73de41b2..b1e34273a1 100644
--- a/rpcs3/rpcs3qt/msg_dialog_frame.h
+++ b/rpcs3/rpcs3qt/msg_dialog_frame.h
@@ -1,5 +1,4 @@
-#ifndef MSGDIALOG_H
-#define MSGDIALOG_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/Memory/vm.h"
@@ -103,5 +102,3 @@ private:
 		}
 	}
 };
-
-#endif // !MSGDIALOG_H
diff --git a/rpcs3/rpcs3qt/networking_tab.h b/rpcs3/rpcs3qt/networking_tab.h
index 5b8c02bf02..eca6f3be63 100644
--- a/rpcs3/rpcs3qt/networking_tab.h
+++ b/rpcs3/rpcs3qt/networking_tab.h
@@ -1,5 +1,4 @@
-#ifndef NETWORKINGTAB_H
-#define NETWORKINGTAB_H
+#pragma once
 
 #include "emu_settings.h"
 
@@ -13,10 +12,4 @@ class networking_tab : public QWidget
 
 public:
 	explicit networking_tab(std::shared_ptr<emu_settings> xemu_settings, QWidget *parent = 0);
-
-signals:
-
-public slots:
 };
-
-#endif // NETWORKINGTAB_H
diff --git a/rpcs3/rpcs3qt/pad_settings_dialog.h b/rpcs3/rpcs3qt/pad_settings_dialog.h
index f7770b6791..d2b69a9ff3 100644
--- a/rpcs3/rpcs3qt/pad_settings_dialog.h
+++ b/rpcs3/rpcs3qt/pad_settings_dialog.h
@@ -1,5 +1,4 @@
-#ifndef PADSETTINGSDIALOG_H
-#define PADSETTINGSDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QEvent>
@@ -91,7 +90,7 @@ class pad_settings_dialog : public QDialog, pad_buttons, PadHandlerBase
 {
 	Q_OBJECT
 
-private slots :
+private Q_SLOTS:
 	void OnPadButtonClicked(int id);
 
 private:
@@ -112,5 +111,3 @@ public:
 	void LoadSettings();
 	const QString GetKeyName(const u32 keyCode);
 };
-
-#endif // PADSETTINGSDIALOG_H
diff --git a/rpcs3/rpcs3qt/register_editor_dialog.h b/rpcs3/rpcs3qt/register_editor_dialog.h
index a2f47c491a..a1d7bc7728 100644
--- a/rpcs3/rpcs3qt/register_editor_dialog.h
+++ b/rpcs3/rpcs3qt/register_editor_dialog.h
@@ -1,5 +1,4 @@
-#ifndef REGISTEREDITOR_H
-#define REGISTEREDITOR_H
+#pragma once
 
 #include "stdafx.h"
 #include "Emu/System.h"
@@ -35,5 +34,3 @@ public:
 private:
 	void OnOkay(const std::shared_ptr<cpu_thread>& _cpu);
 };
-
-#endif // REGISTEREDITOR_H
diff --git a/rpcs3/rpcs3qt/rsx_debugger.h b/rpcs3/rpcs3qt/rsx_debugger.h
index 57e589fc51..a5f75eaa5f 100644
--- a/rpcs3/rpcs3qt/rsx_debugger.h
+++ b/rpcs3/rpcs3qt/rsx_debugger.h
@@ -1,5 +1,4 @@
-#ifndef RSXDEBUGGER_H
-#define RSXDEBUGGER_H
+#pragma once
 
 #include "stdafx.h"
 
@@ -112,12 +111,10 @@ public:
 private:
 	QSignalMapper *signalMapper;
 
-public slots:
+public Q_SLOTS:
 	virtual void keyPressEvent(QKeyEvent* event);
 	virtual void wheelEvent(QWheelEvent* event);
 	virtual void OnClickDrawCalls();
 	virtual void SetFlags();
 	virtual void SetPrograms();
 };
-
-#endif // !RSXDEBUGGER_H
diff --git a/rpcs3/rpcs3qt/save_data_dialog.h b/rpcs3/rpcs3qt/save_data_dialog.h
index 56bb6a709e..2822a190b6 100644
--- a/rpcs3/rpcs3qt/save_data_dialog.h
+++ b/rpcs3/rpcs3qt/save_data_dialog.h
@@ -1,5 +1,4 @@
-#ifndef SAVEDATADIALOG_H
-#define SAVEDATADIALOG_H
+#pragma once
 
 #include "Emu/Cell/Modules/cellSaveData.h"
 
@@ -8,6 +7,3 @@ class save_data_dialog : public SaveDialogBase
 public:
 	virtual s32 ShowSaveDataList(std::vector<SaveDataEntry>& save_entries, s32 focused, vm::ptr<CellSaveDataListSet> listSet) override;
 };
-
-
-#endif // !SAVEDATADIALOG_H
diff --git a/rpcs3/rpcs3qt/save_data_utility.h b/rpcs3/rpcs3qt/save_data_utility.h
index 5f8255b766..b05c31bb18 100644
--- a/rpcs3/rpcs3qt/save_data_utility.h
+++ b/rpcs3/rpcs3qt/save_data_utility.h
@@ -1,5 +1,4 @@
-#ifndef SAVEDATAUTILITY_H
-#define SAVEDATAUTILITY_H
+#pragma once
 
 #include <QDialog>
 #include <QHBoxLayout>
@@ -52,7 +51,7 @@ class save_data_manage_dialog :public QDialog
 	QComboBox* m_sort_options;
 	unsigned int* m_sort_type;
 
-private slots:
+private Q_SLOTS:
 	void OnInfo();
 	void OnCopy();
 	void OnDelete();
@@ -88,7 +87,7 @@ private:
 	QAction* infoAct;
 
 	void OnSort(int id);
-private slots:
+private Q_SLOTS:
 	void OnSelect();
 	void OnManage();
 	void OnEntryCopy();
@@ -96,5 +95,3 @@ private slots:
 	void OnEntryInfo();
 	void ShowContextMenu(const QPoint &pos);
 };
-
-#endif // !SAVEDATAUTILITY_H
diff --git a/rpcs3/rpcs3qt/settings_dialog.h b/rpcs3/rpcs3qt/settings_dialog.h
index 5dd6588344..b936ce430a 100644
--- a/rpcs3/rpcs3qt/settings_dialog.h
+++ b/rpcs3/rpcs3qt/settings_dialog.h
@@ -1,5 +1,4 @@
-#ifndef SETTINGSDIALOG_H
-#define SETTINGSDIALOG_H
+#pragma once
 
 #include "gui_settings.h"
 #include "emu_settings.h"
@@ -17,12 +16,10 @@ class settings_dialog : public QDialog
 
 public:
 	explicit settings_dialog(std::shared_ptr<gui_settings> xSettings, Render_Creator r_Creator, QWidget *parent = 0, GameInfo *game = nullptr);
-signals:
+Q_SIGNALS:
 	void GuiSettingsSyncRequest();
 	void GuiStylesheetRequest(const QString& path);
 	void GuiSettingsSaveRequest();
 private:
 	QTabWidget *tabWidget;
 };
-
-#endif // SETTINGSDIALOG_H
diff --git a/rpcs3/rpcs3qt/system_tab.h b/rpcs3/rpcs3qt/system_tab.h
index c368425b78..10c3a4c6cc 100644
--- a/rpcs3/rpcs3qt/system_tab.h
+++ b/rpcs3/rpcs3qt/system_tab.h
@@ -1,5 +1,4 @@
-#ifndef SYSTEMTAB_H
-#define SYSTEMTAB_H
+#pragma once
 
 #include "emu_settings.h"
 
@@ -13,10 +12,4 @@ class system_tab : public QWidget
 
 public:
 	explicit system_tab(std::shared_ptr<emu_settings> xemu_settings, QWidget *parent = 0);
-
-signals:
-
-public slots:
 };
-
-#endif // SYSTEMTAB_H
diff --git a/rpcs3/rpcs3qt/table_item_delegate.h b/rpcs3/rpcs3qt/table_item_delegate.h
index 202bceb483..e29c1bd37f 100644
--- a/rpcs3/rpcs3qt/table_item_delegate.h
+++ b/rpcs3/rpcs3qt/table_item_delegate.h
@@ -1,5 +1,4 @@
-#ifndef TABLEITEMDELEGATE_H
-#define TABLEITEMDELEGATE_H
+#pragma once
 
 #include <QItemDelegate>
 
@@ -10,5 +9,3 @@ public:
 	explicit table_item_delegate(QObject *parent = 0) {}
 	virtual void drawFocus(QPainter * /*painter*/, const QStyleOptionViewItem & /*option*/, const QRect & /*rect*/) const {}
 };
-
-#endif // !TABLEITEMDELEGATE_H
diff --git a/rpcs3/rpcs3qt/vfs_dialog.h b/rpcs3/rpcs3qt/vfs_dialog.h
index db438cdc1a..f5c8a65033 100644
--- a/rpcs3/rpcs3qt/vfs_dialog.h
+++ b/rpcs3/rpcs3qt/vfs_dialog.h
@@ -1,5 +1,4 @@
-#ifndef VFS_DIALOG_H
-#define VFS_DIALOG_H
+#pragma once
 
 #include "gui_settings.h"
 #include "emu_settings.h"
@@ -19,6 +18,3 @@ private:
 
 	QTabWidget* tabs;
 };
-
-
-#endif
diff --git a/rpcs3/rpcs3qt/welcome_dialog.h b/rpcs3/rpcs3qt/welcome_dialog.h
index d95555e11f..fdb20ff142 100644
--- a/rpcs3/rpcs3qt/welcome_dialog.h
+++ b/rpcs3/rpcs3qt/welcome_dialog.h
@@ -1,5 +1,4 @@
-#ifndef WELCOME_DIALOG_H
-#define WELCOME_DIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QKeyEvent>
@@ -12,5 +11,3 @@ class welcome_dialog : public QDialog
 public:
 	explicit welcome_dialog(QWidget* parent = nullptr);
 };
-
-#endif