diff --git a/package/gluon-setup-mode/luasrc/lib/gluon/upgrade/320-setup-ifname b/package/gluon-setup-mode/luasrc/lib/gluon/upgrade/320-setup-ifname
index c4ef517c..b1c87623 100755
--- a/package/gluon-setup-mode/luasrc/lib/gluon/upgrade/320-setup-ifname
+++ b/package/gluon-setup-mode/luasrc/lib/gluon/upgrade/320-setup-ifname
@@ -16,10 +16,7 @@ if platform.is_outdoor_device() or
 	}) or
 	platform.match('ar71xx', 'mikrotik')
 then
-	sysconfig.setup_ifname = sysconfig.config_ifname or sysconfig.wan_ifname or sysconfig.lan_ifname
+	sysconfig.setup_ifname = sysconfig.wan_ifname or sysconfig.lan_ifname
 else
-	sysconfig.setup_ifname = sysconfig.config_ifname or sysconfig.lan_ifname or sysconfig.wan_ifname
+	sysconfig.setup_ifname = sysconfig.lan_ifname or sysconfig.wan_ifname
 end
-
--- Remove the old sysconfig setting
-sysconfig.config_ifname = nil