diff --git a/hosts/snowhawk/configuration.nix b/hosts/snowhawk/configuration.nix
index f377bc2..8c55464 100644
--- a/hosts/snowhawk/configuration.nix
+++ b/hosts/snowhawk/configuration.nix
@@ -114,7 +114,7 @@
   services.avahi.enable = true;
 
   # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
+  networking.firewall.allowedTCPPorts = [ 22 ];
   # networking.firewall.allowedUDPPorts = [ ... ];
   # Or disable the firewall altogether.
   # networking.firewall.enable = false;