diff --git a/Libraries/LibCore/ResourceImplementation.cpp b/Libraries/LibCore/ResourceImplementation.cpp
index bae2279f8a1..2834124acef 100644
--- a/Libraries/LibCore/ResourceImplementation.cpp
+++ b/Libraries/LibCore/ResourceImplementation.cpp
@@ -9,10 +9,6 @@
 #include <LibCore/ResourceImplementationFile.h>
 #include <LibCore/System.h>
 
-#if defined(AK_OS_WINDOWS)
-#    include <dirent.h>
-#endif
-
 namespace Core {
 
 static OwnPtr<ResourceImplementation> s_the;
diff --git a/Libraries/LibCore/ResourceImplementationFile.cpp b/Libraries/LibCore/ResourceImplementationFile.cpp
index f973b8410f7..4ee4bcc2cf6 100644
--- a/Libraries/LibCore/ResourceImplementationFile.cpp
+++ b/Libraries/LibCore/ResourceImplementationFile.cpp
@@ -11,10 +11,6 @@
 #include <LibCore/ResourceImplementationFile.h>
 #include <LibCore/System.h>
 
-#if defined(AK_OS_WINDOWS)
-#    include <dirent.h>
-#endif
-
 namespace Core {
 
 ResourceImplementationFile::ResourceImplementationFile(String base_directory)
diff --git a/Libraries/LibCore/System.h b/Libraries/LibCore/System.h
index ee195dc3806..7d8517e9ae3 100644
--- a/Libraries/LibCore/System.h
+++ b/Libraries/LibCore/System.h
@@ -33,6 +33,8 @@
 #    include <utime.h>
 #else
 #    define O_CLOEXEC O_NOINHERIT
+#    define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
+#    define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
 using sighandler_t = void (*)(int);
 using socklen_t = int;
 #endif
diff --git a/Libraries/LibFileSystem/CMakeLists.txt b/Libraries/LibFileSystem/CMakeLists.txt
index e782d40baab..972e3499d65 100644
--- a/Libraries/LibFileSystem/CMakeLists.txt
+++ b/Libraries/LibFileSystem/CMakeLists.txt
@@ -5,8 +5,3 @@ endif()
 
 serenity_lib(LibFileSystem filesystem)
 target_link_libraries(LibFileSystem PRIVATE LibCoreMinimal)
-
-if (WIN32)
-    find_path(DIRENT_INCLUDE_DIR dirent.h REQUIRED)
-    target_include_directories(LibFileSystem PRIVATE ${DIRENT_INCLUDE_DIR})
-endif()
diff --git a/Libraries/LibFileSystem/FileSystem.cpp b/Libraries/LibFileSystem/FileSystem.cpp
index 243087e942c..c59c9127c19 100644
--- a/Libraries/LibFileSystem/FileSystem.cpp
+++ b/Libraries/LibFileSystem/FileSystem.cpp
@@ -16,7 +16,7 @@
 #elif defined(AK_OS_LINUX)
 #    include <linux/fs.h>
 #elif defined(AK_OS_WINDOWS)
-#    include <dirent.h>
+#    include <windows.h>
 #endif
 
 // On Linux distros that use glibc `basename` is defined as a macro that expands to `__xpg_basename`, so we undefine it