diff --git a/systems/x86_64-linux/sgx/network.nix b/systems/x86_64-linux/sgx/network.nix
index 3ad13c7..d19a01d 100644
--- a/systems/x86_64-linux/sgx/network.nix
+++ b/systems/x86_64-linux/sgx/network.nix
@@ -37,6 +37,6 @@
     };
   };
 
-  networking.firewall.allowedTCPPorts = [ 548 ];
+  networking.firewall.allowedTCPPorts = [ config.services.netatalk.port ];
   networking.firewall.allowPing = true;
 }