diff --git a/src/daemon/dispatcher.py b/src/daemon/dispatcher.py
index d464fc4..82d30f9 100644
--- a/src/daemon/dispatcher.py
+++ b/src/daemon/dispatcher.py
@@ -21,6 +21,7 @@ from typing import Any, Dict, List, Optional
 
 from src.blackboard.models import Task
 from src.blackboard.db import get_connection
+from src.daemon.spawner import AgentBusyError
 from src.daemon.router import AgentRouter, RouteDecision
 
 logger = logging.getLogger("moziplus-v2.dispatcher")