From 535c85101afcdaa5280099261e67fec5fd90a891 Mon Sep 17 00:00:00 2001
From: Ad Schellevis <ad@opnsense.org>
Date: Tue, 10 Mar 2020 10:50:33 +0100
Subject: [PATCH] MVC, config: fix previous

---
 src/opnsense/mvc/app/library/OPNsense/Core/Config.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/opnsense/mvc/app/library/OPNsense/Core/Config.php b/src/opnsense/mvc/app/library/OPNsense/Core/Config.php
index 422a1f7ce..0ed4628c3 100644
--- a/src/opnsense/mvc/app/library/OPNsense/Core/Config.php
+++ b/src/opnsense/mvc/app/library/OPNsense/Core/Config.php
@@ -566,7 +566,7 @@ class Config extends Singleton
      */
     public function getBackupFilename($revision)
     {
-        $tmp = preg_replace("/[^0-9.]/", $revision);
+        $tmp = preg_replace("/[^0-9.]/", "", $revision);
         $bckfilename = dirname($this->config_file) . "/backup/config-{$tmp}.xml";
         if (is_file($bckfilename)) {
             return $bckfilename;