diff --git a/reactos/include/psdk/winnt.h b/reactos/include/psdk/winnt.h
index 3776b67b3e1..715e83fb6c1 100644
--- a/reactos/include/psdk/winnt.h
+++ b/reactos/include/psdk/winnt.h
@@ -84,7 +84,7 @@ extern "C" {
 #elif (_MSC_VER)
 #define FORCEINLINE __inline
 #else
-#define FORCEINLINE static __inline
+#define FORCEINLINE static __inline__ __attribute__((always_inline))
 #endif
 #endif