diff --git a/observer/messages/crawler_manager.go b/observer/messages/crawler_manager.go
index 4bf8cf3..db38454 100644
--- a/observer/messages/crawler_manager.go
+++ b/observer/messages/crawler_manager.go
@@ -3,8 +3,6 @@ package messages
 
 const (
 	CRAWLER_READY = "CRAWLER_READY"
-	CRAWLER_MGR_STOPPED = "CRAWLER_MGR_STOPPED"
-	CRAWLER_MGR_STARTED = "CRAWLER_MGR_STARTED"
 	ADD_SENSOR_2_END = "ADD_SENSOR_2_END"
 
 )
\ No newline at end of file