diff --git a/app/fax/fax_edit.php b/app/fax/fax_edit.php
index 8854dd43be..cc97110e05 100644
--- a/app/fax/fax_edit.php
+++ b/app/fax/fax_edit.php
@@ -17,7 +17,7 @@
 
 	The Initial Developer of the Original Code is
 	Mark J Crane <markjcrane@fusionpbx.com>
-	Portions created by the Initial Developer are Copyright (C) 2008-2020
+	Portions created by the Initial Developer are Copyright (C) 2008-2021
 	the Initial Developer. All Rights Reserved.
 
 	Contributor(s):
@@ -51,7 +51,7 @@
 	$fax_dir = $_SESSION['switch']['storage']['dir'].'/fax/'.$_SESSION['domain_name'];
 
 //get the fax extension
-	if (strlen($fax_extension) > 0) {
+	if (is_numeric($fax_extension) > 0) {
 		//set the fax directories. example /usr/local/freeswitch/storage/fax/329/inbox
 			$dir_fax_inbox = $fax_dir.'/'.$fax_extension.'/inbox';
 			$dir_fax_sent = $fax_dir.'/'.$fax_extension.'/sent';
@@ -59,19 +59,19 @@
 
 		//make sure the directories exist
 			if (!is_dir($_SESSION['switch']['storage']['dir'])) {
-				mkdir($_SESSION['switch']['storage']['dir'], 0770, false);
+				mkdir($_SESSION['switch']['storage']['dir'], 0770, true);
 			}
 			if (!is_dir($fax_dir.'/'.$fax_extension)) {
-				mkdir($fax_dir.'/'.$fax_extension, 0770, false);
+				mkdir($fax_dir.'/'.$fax_extension, 0770, true);
 			}
 			if (!is_dir($dir_fax_inbox)) {
-				mkdir($dir_fax_inbox, 0770, false);
+				mkdir($dir_fax_inbox, 0770, true);
 			}
 			if (!is_dir($dir_fax_sent)) {
-				mkdir($dir_fax_sent, 0770, false);
+				mkdir($dir_fax_sent, 0770, true);
 			}
 			if (!is_dir($dir_fax_temp)) {
-				mkdir($dir_fax_temp, 0770, false);
+				mkdir($dir_fax_temp, 0770, true);
 			}
 
 	}