diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index 5f3cbcc2e79..d31cd5a9e8b 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -2604,7 +2604,6 @@ PHP_FUNCTION(mb_strwidth)
    Trim the string in terminal width */
 PHP_FUNCTION(mb_strimwidth)
 {
-	zval **arg1, **arg2, **arg3, **arg4, **arg5;
 	char *str, *trimmarker, *encoding;
 	long from, width;
 	int str_len, trimmarker_len, encoding_len;