diff --git a/preproc.c b/preproc.c
index 01cefd713..ca31fbc61 100644
--- a/preproc.c
+++ b/preproc.c
@@ -3822,14 +3822,7 @@ static Token *expand_mmac_params(Token * tline)
             changed = true;
         } else if (tline->type == TOK_PREPROC_ID &&
                    tline->text[0] == '%' && tline->text[1] == '$') {
-            /*
-             * In a sake of backward compatibility we allow
-             * to expand local single macro that early before
-             * pasting token code have place
-             *
-             * NOTE: that new code MUST use %+ macro to obtain
-             * same result
-             */
+            /* expand local macro */
             t = tline;
             tline = tline->next;
             tt = tokenize(t->text);