diff --git a/paramiko/agent.py b/paramiko/agent.py
index 2ff7b449b..1dc99b18a 100644
--- a/paramiko/agent.py
+++ b/paramiko/agent.py
@@ -390,7 +390,7 @@ def __init__(self):
         conn = get_agent_connection()
         if not conn:
             return
-        self._connect()
+        self._connect(conn)
 
     def close(self):
         """