diff --git a/core/lib/Drupal/Core/Cache/APCBackend.php b/core/lib/Drupal/Core/Cache/APCBackend.php
index 410f89b..baf8505 100644
--- a/core/lib/Drupal/Core/Cache/APCBackend.php
+++ b/core/lib/Drupal/Core/Cache/APCBackend.php
@@ -78,15 +78,15 @@ protected function getAPCKey($cid) {
   /**
    * {@inheritdoc}
    */
-  public function get($cid) {
+  public function get($cid, $allow_invalid = FALSE) {
     $cache = apc_fetch($this->getAPCKey($cid));
-    return $this->prepareItem($cache);
+    return $this->prepareItem($cache, $allow_invalid);
   }
 
   /**
    * {@inheritdoc}
    */
-  public function getMultiple(&$cids) {
+  public function getMultiple(&$cids, $allow_invalid = FALSE) {
     // Translate the requested cache item IDs to APC keys.
     $map = array();
     foreach ($cids as $cid) {
@@ -139,7 +139,7 @@ public function getAll($prefix = '') {
    *   The item with data unserialized as appropriate or FALSE if there is no
    *   valid item to load.
    */
-  protected function prepareItem($cache) {
+  protected function prepareItem($cache, $allow_invalid) {
     if (!isset($cache->data)) {
       return FALSE;
     }
@@ -152,6 +152,10 @@ protected function prepareItem($cache) {
       }
     }
 
+    if (!$allow_invalid && !$cache->valid) {
+      return FALSE;
+    }
+
     return $cache;
   }