diff --git a/frontend/src/api/mock.ts b/frontend/src/api/mock.ts
index 5731fe9..e4d001e 100755
--- a/frontend/src/api/mock.ts
+++ b/frontend/src/api/mock.ts
@@ -56,6 +56,7 @@ const MOCK_TASKS: Task[] = [
 const MOCK_ASSETS: Asset[] = [
   {
     id: 'asset-001',
+    key: 'generation/proj-001/task-001/0.png',
     url: 'https://placehold.co/256x256/e94560/1a1a2e?text=Sprite',
     format: 'png',
     width: 256,