diff --git a/src/filters.c b/src/filters.c
index 9ec794a..cafc449 100644
--- a/src/filters.c
+++ b/src/filters.c
@@ -1069,7 +1069,7 @@
 			http_reply_and_close(s, s->txn->status, NULL);
 		else {
 			s->txn->status = 400;
-			http_reply_and_close(s, 400, http_error_message(s, HTTP_ERR_400));
+			http_reply_and_close(s, 400, http_error_message(s));
 		}
 	}