diff --git a/shadowsocks-libev/files/shadowsocks-libev.init b/shadowsocks-libev/files/shadowsocks-libev.init
index aac7e46c5..c831b4155 100644
--- a/shadowsocks-libev/files/shadowsocks-libev.init
+++ b/shadowsocks-libev/files/shadowsocks-libev.init
@@ -262,6 +262,7 @@ rules_down() {
 		"$bin" -f >/dev/null 2>&1
 	}
 	local bin6="$ss_bindir/ss-rules6"
+	[ -x "$bin6" ] && {
 		"$bin6" -f >/dev/null 2>&1
 	}
 }