-#define PRINTF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (printf, FMT, FIRST)))
-#define SCANF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (scanf, FMT, FIRST)))
+#define PRINTF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (__printf__, FMT, FIRST)))
+#define SCANF_FORMAT(FMT, FIRST) ATTRIBUTE ((format (__scanf__, FMT, FIRST)))