diff --git a/Source/Platform.h b/Source/Platform.h
index 5499ce4b..ca9067a3 100644
--- a/Source/Platform.h
+++ b/Source/Platform.h
@@ -16,7 +16,7 @@
 // basic types
 typedef unsigned char BYTE, *PBYTE, *LPBYTE;
 typedef unsigned short WORD, *LPWORD;
-typedef unsigned long DWORD, *LPDWORD;
+typedef unsigned int DWORD, *LPDWORD;
 typedef short SHORT;
 typedef unsigned short USHORT;
 typedef unsigned int UINT;