diff --git a/include/d3d8types.h b/include/d3d8types.h
index 0ffa2dbd32d..95925440b26 100644
--- a/include/d3d8types.h
+++ b/include/d3d8types.h
@@ -263,7 +263,7 @@ typedef enum _D3DVSDT_TYPE {
 #define D3DVSD_CONSTCOUNTMASK    (0xF      << D3DVSD_CONSTCOUNTSHIFT)
 #define D3DVSD_DATALOADTYPEMASK  (0x1      << D3DVSD_DATALOADTYPESHIFT)
 #define D3DVSD_STREAMTESSMASK    (0x1      << D3DVSD_STREAMTESSSHIFT)
-#define D3DVSD_TOKENTYPEMASK     (0x7      << D3DVSD_TOKENTYPESHIFT)
+#define D3DVSD_TOKENTYPEMASK     (0x7u     << D3DVSD_TOKENTYPESHIFT)
 
 
 #define D3DVSD_MAKETOKENTYPE(TokenType) \