diff --git a/scripts/agent_manager.py b/scripts/agent_manager.py
index 2389e7bd71..285b9f1d7b 100644
--- a/scripts/agent_manager.py
+++ b/scripts/agent_manager.py
@@ -60,7 +60,7 @@ def delete_agent(key):
     global agents
 
     try:
-        del agents[key]
+        del agents[int(key)]
         return True
     except KeyError:
         return False