diff --git a/xos/synchronizers/base/backend.py b/xos/synchronizers/base/backend.py
index af51e73..206c27f 100644
--- a/xos/synchronizers/base/backend.py
+++ b/xos/synchronizers/base/backend.py
@@ -3,7 +3,7 @@
 import threading
 import time
 from synchronizers.base.event_loop import XOSObserver
-from synchronizers.base.event_manager import EventListener
+#from synchronizers.base.event_manager import EventListener
 from xos.logger import Logger, logging
 from synchronizers.model_policy import run_policy
 from xos.config import Config