diff --git a/tests/serialization/local-draft-storage.test.ts b/tests/serialization/local-draft-storage.test.ts
index 1540fe62..4a490278 100644
--- a/tests/serialization/local-draft-storage.test.ts
+++ b/tests/serialization/local-draft-storage.test.ts
@@ -308,6 +308,7 @@ describe("local draft storage", () => {
           brushes: {
             [invalidBrush.id]: invalidBrush
           },
+          terrains: {},
           paths: {},
           modelInstances: {},
           entities: {},