diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackend.php b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
index 5ae4b7a..b39143b 100755
--- a/core/lib/Drupal/Core/Cache/DatabaseBackend.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
@@ -206,17 +206,17 @@ public function doSetMultiple(array $items) {
     // Check if maximum expiration settings for cache bin is defined. If set,
     // enforce an upper limit for the expiration to allow for garbage
     // collection.
-    $max_lifetime = isset($this->configuration['max_lifetime']) ? $this->configuration['max_lifetime'] + REQUEST_TIME : Cache::PERMANENT;
+    $max_expire = isset($this->configuration['max_lifetime']) ? $this->configuration['max_lifetime'] + REQUEST_TIME : Cache::PERMANENT;
 
     foreach ($items as $cid => $item) {
       $item += array(
-        'expire' => $max_lifetime,
+        'expire' => $max_expire,
         'tags' => array(),
       );
 
       // If maximum expiration is set, enforce an upper limit on the expiry.
-      if ($max_lifetime !== Cache::PERMANENT && ($item['expire'] === Cache::PERMANENT || $item['expire'] > $max_lifetime)) {
-        $item['expire'] = $max_lifetime;
+      if ($max_expire !== Cache::PERMANENT && ($item['expire'] === Cache::PERMANENT || $item['expire'] > $max_expire)) {
+        $item['expire'] = $max_expire;
       }
 
       Cache::validateTags($item['tags']);