diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h
index 76926c317bff..f8d864c95240 100644
--- a/sys/sys/cdefs.h
+++ b/sys/sys/cdefs.h
@@ -122,7 +122,7 @@
 #define __pure2		__attribute__((__const__))
 #define __unused
 #endif
-#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7
+#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ == 3
 #define __dead2		__attribute__((__noreturn__))
 #define __pure2		__attribute__((__const__))
 #define __unused	__attribute__((__unused__))