diff --git a/app/calls/resources/classes/do_not_disturb.php b/app/calls/resources/classes/do_not_disturb.php
index 2149f8e1ad..82f1507564 100644
--- a/app/calls/resources/classes/do_not_disturb.php
+++ b/app/calls/resources/classes/do_not_disturb.php
@@ -113,7 +113,15 @@ include "root.php";
 
 			//revoke temporary permissions
 				$p->delete('extension_edit', 'temp');
+
+			//delete extension from the cache
+				$cache = new cache;
+				$cache->delete("directory:".$this->extension."@".$this->domain_name);
+				if(strlen($this->number_alias) > 0){
+					$cache->delete("directory:".$this->number_alias."@".$this->domain_name);
+				}
+
 		}
 	}
 
-?>
\ No newline at end of file
+?>