diff --git a/app/calls/resources/classes/call_forward.php b/app/calls/resources/classes/call_forward.php
index 710678217a..18eecd5864 100644
--- a/app/calls/resources/classes/call_forward.php
+++ b/app/calls/resources/classes/call_forward.php
@@ -93,7 +93,7 @@ include "root.php";
 				if (strlen($this->forward_all_destination) == 0 || $this->forward_all_enabled == "false") {
 					$sql .= "forward_all_destination = null, ";
 					$sql .= "dial_string = null, ";
-					$sql .= "forward_all_enabled = false ";
+					$sql .= "forward_all_enabled = 'false' ";
 				}
 				else {
 					$sql .= "forward_all_destination = '$this->forward_all_destination', ";