diff --git a/engine/platform/win32/lib_win.h b/engine/platform/win32/lib_win.h
index 429dd4f8..1761b5cd 100644
--- a/engine/platform/win32/lib_win.h
+++ b/engine/platform/win32/lib_win.h
@@ -16,9 +16,10 @@ GNU General Public License for more details.
 #include "library.h"
 #include <winnt.h>
 #include <psapi.h>
+#include STDINT_H
 
-#define CALCULATE_ADDRESS( base, offset ) ( ( DWORD )( base ) + ( DWORD )( offset ) )
+#define CALCULATE_ADDRESS( base, offset ) ((uint8_t *)( base ) + (uintptr_t)( offset ))
 
 FARPROC MemoryGetProcAddress( void *module, const char *name );
 void MemoryFreeLibrary( void *hInstance );
-void *MemoryLoadLibrary( const char *name );
\ No newline at end of file
+void *MemoryLoadLibrary( const char *name );