diff --git a/hosts/snowbelle/configuration.nix b/hosts/snowbelle/configuration.nix
index 8a434aa..e1b6a94 100644
--- a/hosts/snowbelle/configuration.nix
+++ b/hosts/snowbelle/configuration.nix
@@ -111,7 +111,7 @@
     25567
   ];
 
-  #networking.firewall.allowedUDPPorts = [ ... ];
+  networking.firewall.allowedUDPPorts = [ 51820 ];
   # Or disable the firewall altogether.
   networking.firewall.enable = false;