diff --git a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
index fb6b25e6c..e4125e36b 100755
--- a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
+++ b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
@@ -22,6 +22,9 @@
 		return true
 	end
 	function splitstring(inputstr, sep)
+		if inputstr == nil then
+			return ""
+		end
 		if sep == nil then
 			sep = "%s"
 		end
@@ -558,8 +561,13 @@
 			<%
 			    iffind=0
 			    uciifname=uci:get("network",ifname,"ifname")
-			    realifname=splitstring(uciifname,'.')[1] or ""
-			    vlan=splitstring(uciifname,'.')[2] or ""
+			    if uciifname:match("/") then
+				realifname=uciifname
+				vlan=""
+			    else
+				realifname=splitstring(uciifname,'.')[1] or ""
+				vlan=splitstring(uciifname,'.')[2] or ""
+			    end
 			    for _, ifacea in ipairs(ifaces) do
 				if not (ifacea == "lo" or ifacea == "6in4-omr6in4" or ifacea == "mlvpn0" or ifacea:match("^ifb.*") or ifacea:match("^sit.*") or ifacea:match("^gre.*") or ifacea:match("^ip6.*") or ifacea:match("^teql.*") or ifacea:match("^erspan.*") or ifacea:match("^tun.*")) and device_notvirtual(ifacea) then
 			%>