diff --git a/hosts/dregil/configuration.nix b/hosts/dregil/configuration.nix
index cd23964..186fa29 100644
--- a/hosts/dregil/configuration.nix
+++ b/hosts/dregil/configuration.nix
@@ -101,7 +101,7 @@ in {
   services.blueman.enable = true;
 
   # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
+  networking.firewall.allowedTCPPorts = [ 5223 ];
   # networking.firewall.allowedUDPPorts = [ ... ];
   # Or disable the firewall altogether.
   # networking.firewall.enable = false;