diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 2beab08c3aa..9b17374f80b 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -2375,7 +2375,7 @@ eval_subst (arg, old0, new0, old1, new1)
 	default:
 	  break;
 	}
-      /* fall through (???) */
+      /* fall through - ??? */
 
     case '<':
       {