diff --git a/src/structs.h b/src/structs.h
index 8c84b5a..43603aa 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -2515,7 +2515,7 @@
     char_u	*actext;	    /* accelerator text (after TAB) */
     int		priority;	    /* Menu order priority */
 #ifdef FEAT_GUI
-    void	(*cb) __ARGS((vimmenu_T *));	    /* Call-back routine */
+    void	(*cb)(vimmenu_T *);	    /* Call-back routine */
 #endif
 #ifdef FEAT_TOOLBAR
     char_u	*iconfile;	    /* name of file for icon or NULL */