diff --git a/include/guiddef.h b/include/guiddef.h
index 26b1ad7..37a7773 100644
--- a/include/guiddef.h
+++ b/include/guiddef.h
@@ -40,7 +40,8 @@ extern "C++" {
 #define __CRT_UUID_DECL(type,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8)           \
     extern "C++" {                                                      \
     template<> inline const GUID &__wine_uuidof<type>() {               \
-        return (const IID){l,w1,w2, {b1,b2,b3,b4,b5,b6,b7,b8}};         \
+        static const IID __iid = {l,w1,w2, {b1,b2,b3,b4,b5,b6,b7,b8}};  \
+        return __iid;                                                   \
     }                                                                   \
     template<> inline const GUID &__wine_uuidof<type*>() {              \
         return __wine_uuidof<type>();                                   \