diff --git a/syncthing.firewall b/syncthing.firewall
index d05f3ed..f138cf6 100644
--- a/syncthing.firewall
+++ b/syncthing.firewall
@@ -5,4 +5,4 @@
 TCP="22000"
 
 # space separated list of allowed UDP ports
-TCP="21025:21026"
+UDP="21025:21026"