diff --git a/nixos/modules/services/games/factorio.nix b/nixos/modules/services/games/factorio.nix
index 7962a4c3baf9..73099ae33634 100644
--- a/nixos/modules/services/games/factorio.nix
+++ b/nixos/modules/services/games/factorio.nix
@@ -53,7 +53,7 @@ in
       };
       openFirewall = mkOption {
         type = types.bool;
-        default = true;
+        default = false;
         description = ''
           Whether to automatically open the specified UDP port in the firewall.
         '';