diff --git a/mail-server.nix b/mail-server.nix
index f6ab9e7..97cd7a2 100644
--- a/mail-server.nix
+++ b/mail-server.nix
@@ -35,5 +35,5 @@ in
   # set the vmail gid to a specific value
   users.groups = {
     vmail = { gid = vmail_id_start; };
-  }
+  };
 }