diff --git a/bin/sh/arith_yylex.c b/bin/sh/arith_yylex.c
index 08e43a488b15..cfb9724d524b 100644
--- a/bin/sh/arith_yylex.c
+++ b/bin/sh/arith_yylex.c
@@ -80,7 +80,7 @@ yylex()
 		case '7':
 		case '8':
 		case '9':
-			yylval.val = strtoarith_t(buf, (char **)&end, 0);
+			yylval.val = strtoarith_t(buf, &end, 0);
 			arith_buf = end;
 			return ARITH_NUM;
 		case 'A':