diff --git a/libs/ardour/audioengine.cc b/libs/ardour/audioengine.cc
index 89e1c4fe13..eff4ccb658 100644
--- a/libs/ardour/audioengine.cc
+++ b/libs/ardour/audioengine.cc
@@ -644,7 +644,7 @@ AudioEngine::start (bool for_latency)
 			_backend->set_time_master (true);
 		}
 
-		_session->reconnect_existing_routes (true);
+		_session->reconnect_existing_routes (true, true);
 	}
 	
 	start_metering_thread ();