diff --git a/src/core/piece/agent-usecases.ts b/src/core/piece/agent-usecases.ts
index 55e7037..62c4768 100644
--- a/src/core/piece/agent-usecases.ts
+++ b/src/core/piece/agent-usecases.ts
@@ -296,7 +296,7 @@ export async function decomposeTask(
   });
 
   if (response.status !== 'done') {
-    const detail = response.error ?? response.content;
+    const detail = response.error || response.content || response.status;
     throw new Error(`Team leader failed: ${detail}`);
   }
 
@@ -336,7 +336,7 @@ export async function requestMoreParts(
   });
 
   if (response.status !== 'done') {
-    const detail = response.error ?? response.content;
+    const detail = response.error || response.content || response.status;
     throw new Error(`Team leader feedback failed: ${detail}`);
   }