fix nixos tests

1 files changed, 1 insertions, 0 deletions

diff --git a/nix/modules/default/gw-sharding.nix b/nix/modules/default/gw-sharding.nix

index 5b83e99f..9358aca9 100644
--- a/nix/modules/default/gw-sharding.nix
+++ b/nix/modules/default/gw-sharding.nix
@@ -18,6 +18,7 @@ in
     extraGatewayPorts = lib.mkOption {
       type = lib.types.listOf lib.types.port;
       description = "Extra gateway ports";
+      default = [];
     };
   };