diff --git a/Utilities/File.cpp b/Utilities/File.cpp
index 78e71177e5..cc0c60c71d 100644
--- a/Utilities/File.cpp
+++ b/Utilities/File.cpp
@@ -1,4 +1,4 @@
-#include "File.h"
+#include "File.h"
 #include "mutex.h"
 #include "StrFmt.h"
 #include "BEType.h"
@@ -1580,7 +1580,7 @@ bool fs::remove_all(const std::string& path, bool remove_root)
 	return true;
 }
 
-u64 fs::get_dir_size(const std::string& path)
+u64 fs::get_dir_size(const std::string& path, u64 rounding_alignment)
 {
 	u64 result = 0;
 
@@ -1593,12 +1593,12 @@ u64 fs::get_dir_size(const std::string& path)
 
 		if (entry.is_directory == false)
 		{
-			result += entry.size;
+			result += ::align(entry.size, rounding_alignment);
 		}
 
 		if (entry.is_directory == true)
 		{
-			result += get_dir_size(path + '/' + entry.name);
+			result += get_dir_size(path + '/' + entry.name, rounding_alignment);
 		}
 	}
 
diff --git a/Utilities/File.h b/Utilities/File.h
index 91d0fbe8e0..e97efce522 100644
--- a/Utilities/File.h
+++ b/Utilities/File.h
@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include "types.h"
 #include "bit_set.h"
@@ -506,7 +506,7 @@ namespace fs
 	bool remove_all(const std::string& path, bool remove_root = true);
 
 	// Get size of all files recursively
-	u64 get_dir_size(const std::string& path);
+	u64 get_dir_size(const std::string& path, u64 rounding_alignment = 1);
 
 	enum class error : uint
 	{
diff --git a/rpcs3/Emu/Cell/Modules/cellGame.cpp b/rpcs3/Emu/Cell/Modules/cellGame.cpp
index aea2f86aab..0cdea2bdd8 100644
--- a/rpcs3/Emu/Cell/Modules/cellGame.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellGame.cpp
@@ -234,7 +234,7 @@ error_code cellHddGameGetSizeKB(vm::ptr<u32> size)
 		return CELL_HDDGAME_ERROR_FAILURE;
 	}
 
-	*size = ::narrow<u32>(fs::get_dir_size(local_dir) / 1024);
+	*size = ::narrow<u32>(fs::get_dir_size(local_dir, 1024) / 1024);
 
 	return CELL_OK;
 }
@@ -273,7 +273,7 @@ error_code cellGameDataGetSizeKB(vm::ptr<u32> size)
 		return CELL_GAMEDATA_ERROR_FAILURE;
 	}
 
-	*size = ::narrow<u32>(fs::get_dir_size(local_dir) / 1024);
+	*size = ::narrow<u32>(fs::get_dir_size(local_dir, 1024) / 1024);
 
 	return CELL_OK;
 }
@@ -849,7 +849,7 @@ error_code cellGameGetSizeKB(vm::ptr<s32> size)
 		}
 	}
 
-	*size = ::narrow<u32>(fs::get_dir_size(local_dir) / 1024);
+	*size = ::narrow<u32>(fs::get_dir_size(local_dir, 1024) / 1024);
 
 	return CELL_OK;
 }