diff --git a/luci-app-passwall/luasrc/model/cbi/passwall/client/shunt_rules.lua b/luci-app-passwall/luasrc/model/cbi/passwall/client/shunt_rules.lua
index a5dd640dd..bddc19a63 100644
--- a/luci-app-passwall/luasrc/model/cbi/passwall/client/shunt_rules.lua
+++ b/luci-app-passwall/luasrc/model/cbi/passwall/client/shunt_rules.lua
@@ -144,7 +144,7 @@ ip_list.wrap = "off"
 ip_list.validate = function(self, value)
 	local ipmasks= {}
 	value = value:gsub("^%s+", ""):gsub("%s+$","\n"):gsub("\r\n","\n"):gsub("[ \t]*\n[ \t]*", "\n")
-	string.gsub(value, '[^' .. "\r\n" .. ']+', function(w) table.insert(ipmasks, w) end)
+	string.gsub(value, "[^\r\n]+", function(w) table.insert(ipmasks, w) end)
 	for index, ipmask in ipairs(ipmasks) do
 		if ipmask:find("geoip:") and ipmask:find("geoip:") == 1 and not ipmask:find("%s") then
 		elseif ipmask:find("ext:") and ipmask:find("ext:") == 1 and not ipmask:find("%s") then