diff --git a/Common/MemoryUtil.cpp b/Common/MemoryUtil.cpp
index 4fef8c6f3e..519bfc6bd5 100644
--- a/Common/MemoryUtil.cpp
+++ b/Common/MemoryUtil.cpp
@@ -50,7 +50,7 @@ static SYSTEM_INFO sys_info;
 #endif
 
 #define MEM_PAGE_MASK ((MEM_PAGE_SIZE)-1)
-#define round_page(x) ((((uintptr_t)(x)) + MEM_PAGE_MASK) & ~(MEM_PAGE_MASK))
+#define ppsspp_round_page(x) ((((uintptr_t)(x)) + MEM_PAGE_MASK) & ~(MEM_PAGE_MASK))
 
 #ifdef _WIN32
 // Win32 flags are odd...
@@ -127,7 +127,7 @@ void *AllocateExecutableMemory(size_t size) {
 		GetSystemInfo(&sys_info);
 #if defined(_M_X64)
 	if ((uintptr_t)&hint_location > 0xFFFFFFFFULL) {
-		size_t aligned_size = round_page(size);
+		size_t aligned_size = ppsspp_round_page(size);
 #if 1   // Turn off to hunt for RIP bugs on x86-64.
 		ptr = SearchForFreeMem(aligned_size);
 		if (!ptr) {
@@ -161,11 +161,11 @@ void *AllocateExecutableMemory(size_t size) {
 	// We use a dummy global variable to give us a good location to start from.
 	if (!map_hint) {
 		if ((uintptr_t) &hint_location > 0xFFFFFFFFULL)
-			map_hint = (char*)round_page(&hint_location) - 0x20000000; // 0.5gb lower than our approximate location
+			map_hint = (char*)ppsspp_round_page(&hint_location) - 0x20000000; // 0.5gb lower than our approximate location
 		else
 			map_hint = (char*)0x20000000; // 0.5GB mark in memory
 	} else if ((uintptr_t) map_hint > 0xFFFFFFFFULL) {
-		map_hint -= round_page(size); /* round down to the next page if we're in high memory */
+		map_hint -= ppsspp_round_page(size); /* round down to the next page if we're in high memory */
 	}
 #endif
 
@@ -191,7 +191,7 @@ void *AllocateExecutableMemory(size_t size) {
 #if defined(_M_X64) && !defined(_WIN32)
 	else if ((uintptr_t)map_hint <= 0xFFFFFFFF) {
 		// Round up if we're below 32-bit mark, probably allocating sequentially.
-		map_hint += round_page(size);
+		map_hint += ppsspp_round_page(size);
 
 		// If we moved ahead too far, skip backwards and recalculate.
 		// When we free, we keep moving forward and eventually move too far.
@@ -204,7 +204,7 @@ void *AllocateExecutableMemory(size_t size) {
 }
 
 void *AllocateMemoryPages(size_t size, uint32_t memProtFlags) {
-	size = round_page(size);
+	size = ppsspp_round_page(size);
 #ifdef _WIN32
 	if (sys_info.dwPageSize == 0)
 		GetSystemInfo(&sys_info);
diff --git a/Core/Dialog/PSPGamedataInstallDialog.cpp b/Core/Dialog/PSPGamedataInstallDialog.cpp
index a51d8ccefb..5210914309 100644
--- a/Core/Dialog/PSPGamedataInstallDialog.cpp
+++ b/Core/Dialog/PSPGamedataInstallDialog.cpp
@@ -211,7 +211,7 @@ void PSPGamedataInstallDialog::WriteSfoFile() {
 	size_t sfoSize;
 	sfoFile.WriteSFO(&sfoData,&sfoSize);
 
-	u32 handle = pspFileSystem.OpenFile(sfopath, (FileAccess)(FILEACCESS_WRITE | FILEACCESS_CREATE | FILEACCESS_TRUNCATE));
+	int handle = pspFileSystem.OpenFile(sfopath, (FileAccess)(FILEACCESS_WRITE | FILEACCESS_CREATE | FILEACCESS_TRUNCATE));
 	if (handle >= 0) {
 		pspFileSystem.WriteFile(handle, sfoData, sfoSize);
 		pspFileSystem.CloseFile(handle);
diff --git a/Core/Dialog/PSPGamedataInstallDialog.h b/Core/Dialog/PSPGamedataInstallDialog.h
index 85d0c33fc4..5c9662e24e 100644
--- a/Core/Dialog/PSPGamedataInstallDialog.h
+++ b/Core/Dialog/PSPGamedataInstallDialog.h
@@ -62,7 +62,7 @@ private:
 	u64 allReadSize;   // use this to calculate progress value.
 	int progressValue;
 
-	u32 currentInputFile;
+	int currentInputFile;
 	u32 currentInputBytesLeft;
-	u32 currentOutputFile;
+	int currentOutputFile;
 };
diff --git a/Core/Dialog/SavedataParam.cpp b/Core/Dialog/SavedataParam.cpp
index c014d0ca3f..484bb6e910 100644
--- a/Core/Dialog/SavedataParam.cpp
+++ b/Core/Dialog/SavedataParam.cpp
@@ -61,7 +61,7 @@ namespace
 
 	bool ReadPSPFile(std::string filename, u8 **data, s64 dataSize, s64 *readSize)
 	{
-		u32 handle = pspFileSystem.OpenFile(filename, FILEACCESS_READ);
+		int handle = pspFileSystem.OpenFile(filename, FILEACCESS_READ);
 		if (handle < 0)
 			return false;
 
@@ -81,7 +81,7 @@ namespace
 
 	bool WritePSPFile(std::string filename, u8 *data, SceSize dataSize)
 	{
-		u32 handle = pspFileSystem.OpenFile(filename, (FileAccess)(FILEACCESS_WRITE | FILEACCESS_CREATE | FILEACCESS_TRUNCATE));
+		int handle = pspFileSystem.OpenFile(filename, (FileAccess)(FILEACCESS_WRITE | FILEACCESS_CREATE | FILEACCESS_TRUNCATE));
 		if (handle < 0)
 			return false;
 
diff --git a/Core/HLE/scePsmf.cpp b/Core/HLE/scePsmf.cpp
index 458c0097f0..0154e9f085 100644
--- a/Core/HLE/scePsmf.cpp
+++ b/Core/HLE/scePsmf.cpp
@@ -237,7 +237,7 @@ public:
 		return mediaengine->IsVideoEnd() && (mediaengine->IsNoAudioData() || !mediaengine->IsActuallyPlayingAudio());
 	}
 
-	u32 filehandle;
+	int filehandle;
 	u32 fileoffset;
 	int readSize;
 	int streamSize;
diff --git a/Core/PSPLoaders.cpp b/Core/PSPLoaders.cpp
index 6fbca5fcd5..d72c648601 100644
--- a/Core/PSPLoaders.cpp
+++ b/Core/PSPLoaders.cpp
@@ -249,7 +249,7 @@ bool Load_PSP_ISO(FileLoader *fileLoader, std::string *error_string) {
 	}
 
 	bool hasEncrypted = false;
-	u32 fd;
+	int fd;
 	if ((fd = pspFileSystem.OpenFile(bootpath, FILEACCESS_READ)) >= 0)
 	{
 		u8 head[4];