diff --git a/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall b/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall
index 9a8edfc77..0dd4b0a57 100755
--- a/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall
+++ b/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall
@@ -241,7 +241,7 @@ done
 
 uci -q batch <<-EOF >/dev/null
 	set firewall.zone_lan.mtu_fix='1'
-	set firewall.zone_vpn.mtu_fix='0'
+	set firewall.zone_vpn.mtu_fix='1'
 	set firewall.@include[0].reload='1'
 	commit firewall
 EOF