diff --git a/Projects/UOContent/Migrations/Server.Engines.Spawners.SpawnerEntry.v1.json b/Projects/UOContent/Migrations/Server.Engines.Spawners.SpawnerEntry.v1.json
index 550450b00..9386748e3 100644
--- a/Projects/UOContent/Migrations/Server.Engines.Spawners.SpawnerEntry.v1.json
+++ b/Projects/UOContent/Migrations/Server.Engines.Spawners.SpawnerEntry.v1.json
@@ -47,6 +47,7 @@
       "type": "System.Collections.Generic.List\u003CServer.ISpawnable\u003E",
       "rule": "ListMigrationRule",
       "ruleArguments": [
+        "@Tidy",
         "Server.ISpawnable",
         "SerializableInterfaceMigrationRule"
       ]