diff --git a/app/extensions/extension_edit.php b/app/extensions/extension_edit.php
index c988e0f6d4..1ce3eeea06 100644
--- a/app/extensions/extension_edit.php
+++ b/app/extensions/extension_edit.php
@@ -825,6 +825,7 @@
 	if (strlen($limit_destination) == 0) { $limit_destination = 'error/user_busy'; }
 	if (strlen($call_timeout) == 0) { $call_timeout = '30'; }
 	if (strlen($call_screen_enabled) == 0) { $call_screen_enabled = 'false'; }
+	if (strlen($voicemail_enabled) == 0) { $voicemail_enabled = $_SESSION['voicemail']['enabled_default']['boolean']; }
 
 //create token
 	$object = new token;
@@ -1972,4 +1973,4 @@
 //include the footer
 	require_once "resources/footer.php";
 
-?>
\ No newline at end of file
+?>