diff --git a/src/renderer/src/store/slices/worktrees/worktrees-slice-test-harness.ts b/src/renderer/src/store/slices/worktrees/worktrees-slice-test-harness.ts
index 1c8a0db95b8..871136694dd 100644
--- a/src/renderer/src/store/slices/worktrees/worktrees-slice-test-harness.ts
+++ b/src/renderer/src/store/slices/worktrees/worktrees-slice-test-harness.ts
@@ -153,6 +153,7 @@ export function createTestStore() {
           ]
         ]),
         repos: [],
+        projectGroups: [],
         projectHostSetups: [],
         deleteProjectHostSetup: vi.fn().mockResolvedValue(null),
         updateFolderWorkspace: vi.fn().mockResolvedValue(true),