diff --git a/luci-app-glorytun/root/etc/uci-defaults/40_luci-glorytun b/luci-app-glorytun/root/etc/uci-defaults/40_luci-glorytun
index d2616d795..44195c088 100644
--- a/luci-app-glorytun/root/etc/uci-defaults/40_luci-glorytun
+++ b/luci-app-glorytun/root/etc/uci-defaults/40_luci-glorytun
@@ -19,6 +19,7 @@ uci -q batch <<-EOF >/dev/null
 	set network.glorytun.ip4table=vpn
 	set network.glorytun.multipath=off
 	set network.glorytun.leasetime=12h
+	set network.glorytun.mtu=1280
 	commit network
 EOF
 #	set network.glorytun.proto=static