diff --git a/src/plugins/data/public/query/state_sync/sync_state_with_url.test.ts b/src/plugins/data/public/query/state_sync/sync_state_with_url.test.ts
index ca87637eb467..364d21276187 100644
--- a/src/plugins/data/public/query/state_sync/sync_state_with_url.test.ts
+++ b/src/plugins/data/public/query/state_sync/sync_state_with_url.test.ts
@@ -66,6 +66,8 @@ setupMock.uiSettings.get.mockImplementation((key: string) => {
       return { pause: false, value: 0 };
     case UI_SETTINGS.QUERY_ENHANCEMENTS_ENABLED:
       return false;
+    case UI_SETTINGS.SEARCH_MAX_RECENT_DATASETS:
+      return 4;
     default:
       throw new Error(`sync_query test: not mocked uiSetting: ${key}`);
   }