diff --git a/libraries/src/Installer/InstallerHelper.php b/libraries/src/Installer/InstallerHelper.php
index 5fb9b6439a2f0..9cde483967ad5 100644
--- a/libraries/src/Installer/InstallerHelper.php
+++ b/libraries/src/Installer/InstallerHelper.php
@@ -395,7 +395,7 @@ public static function isChecksumValid($packagefile, $updateObject)
 				$hashRemote  = $updateObject->$hash->_data;
 				$hashOnFile  = true;
 
-				if ($hashPackage !== $hashRemote)
+				if ($hashPackage !== strtolower($hashRemote))	
 				{
 					return self::HASH_NOT_VALIDATED;
 				}