diff --git a/Core/FileSystems/VirtualDiscFileSystem.cpp b/Core/FileSystems/VirtualDiscFileSystem.cpp
index 9fd75229d9..96a4db7169 100644
--- a/Core/FileSystems/VirtualDiscFileSystem.cpp
+++ b/Core/FileSystems/VirtualDiscFileSystem.cpp
@@ -268,7 +268,7 @@ int VirtualDiscFileSystem::getFileListIndex(std::string& fileName)
 
 	fileList.push_back(entry);
 
-	return fileList.size()-1;
+	return (int)fileList.size()-1;
 }
 
 int VirtualDiscFileSystem::getFileListIndex(u32 accessBlock, u32 accessSize, bool blockMode)
diff --git a/Core/FileSystems/VirtualDiscFileSystem.h b/Core/FileSystems/VirtualDiscFileSystem.h
index 14341e1dc1..05b712e148 100644
--- a/Core/FileSystems/VirtualDiscFileSystem.h
+++ b/Core/FileSystems/VirtualDiscFileSystem.h
@@ -124,9 +124,9 @@ private:
 		HandlerFileHandle handler;
 		VirtualFileType type;
 		u32 fileIndex;
-		u32 curOffset;
-		u32 startOffset;	// only used by lbn files
-		u32 size;			// only used by lbn files
+		u64 curOffset;
+		u64 startOffset;	// only used by lbn files
+		u64 size;			// only used by lbn files
 
 		bool Open(std::string& basePath, std::string& fileName, FileAccess access) {
 			if (handler.IsValid()) {
diff --git a/Core/HLE/sceNet.cpp b/Core/HLE/sceNet.cpp
index 517933fa2e..8d6aa610b8 100644
--- a/Core/HLE/sceNet.cpp
+++ b/Core/HLE/sceNet.cpp
@@ -305,8 +305,8 @@ int sceNetAdhocTerm() {
 int sceNetEtherNtostr(const char *mac, u32 bufferPtr) {
 	DEBUG_LOG(HLE, "UNTESTED sceNetEtherNtostr(%s, %x)", mac, bufferPtr);
 	if(Memory::IsValidAddress(bufferPtr)) {
-		size_t len = strlen(mac);
-		for (size_t i = 0; i < len; i++)
+		int len = (int)strlen(mac);
+		for (int i = 0; i < len; i++)
 			Memory::Write_U8(mac[i], bufferPtr + i);
 	}
 	else
diff --git a/UI/MiscScreens.cpp b/UI/MiscScreens.cpp
index 83824cb45b..0456f599e9 100644
--- a/UI/MiscScreens.cpp
+++ b/UI/MiscScreens.cpp
@@ -136,7 +136,7 @@ NewLanguageScreen::NewLanguageScreen() : ListPopupScreen("Language") {
 			}
 		}
 		if (g_Config.languageIni == code)
-			selected = i;
+			selected = (int)i;
 		listing.push_back(buttonTitle);
 	}