1 files changed, 1 insertions, 2 deletions
diff --git a/monitor.h b/monitor.h
index 38b22a4b28..185cc3e812 100644
--- a/monitor.h
+++ b/monitor.h
@@ -50,8 +50,7 @@ int monitor_read_bdrv_key_start(Monitor *mon, BlockDriverState *bs,
 int monitor_get_fd(Monitor *mon, const char *fdname);
 
 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap);
-void monitor_printf(Monitor *mon, const char *fmt, ...)
-    __attribute__ ((__format__ (__printf__, 2, 3)));
+void monitor_printf(Monitor *mon, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
 void monitor_print_filename(Monitor *mon, const char *filename);
 void monitor_flush(Monitor *mon);