diff --git a/modules/config/instances/config/mastodon.nix b/modules/config/instances/config/mastodon.nix
index 3ed23f4..8aa4d3b 100755
--- a/modules/config/instances/config/mastodon.nix
+++ b/modules/config/instances/config/mastodon.nix
@@ -31,6 +31,9 @@ in
     "mast"
     "md"
   ];
+  ports = {
+    port0 = 80;
+  };
   interface = {
     id = "vm-${name}";
     mac = "02:00:00:00:55:05";