diff --git a/core/lib/Drupal/Core/Cache/ApcBackend.php b/core/lib/Drupal/Core/Cache/APCBackend.php
similarity index 96%
rename from core/lib/Drupal/Core/Cache/ApcBackend.php
rename to core/lib/Drupal/Core/Cache/APCBackend.php
index d257167..c4c480f 100644
--- a/core/lib/Drupal/Core/Cache/ApcBackend.php
+++ b/core/lib/Drupal/Core/Cache/APCBackend.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Contains Drupal\Core\Cache\ApcBackend.
+ * Contains Drupal\Core\Cache\APCBackend.
  */
 
 namespace Drupal\Core\Cache;
@@ -13,7 +13,7 @@
  * Stores cache items in the Alternative PHP Cache (APC). Each cache bin
  * corresponds to a prefix of the APC variable with the same name.
  */
-class ApcBackend implements CacheBackendInterface {
+class APCBackend implements CacheBackendInterface {
 
   /**
    * @var string
@@ -127,7 +127,7 @@ public static function getPrefix($bin) {
    * @return string
    *   The APC key for the cache item ID.
    */
-  protected function getApcKey($cid) {
+  protected function getAPCKey($cid) {
     return $this->binPrefix . $cid;
   }
 
@@ -135,7 +135,7 @@ protected function getApcKey($cid) {
    * Implements Drupal\Core\Cache\CacheBackendInterface::get().
    */
   public function get($cid) {
-    $cache = apc_fetch($this->getApcKey($cid));
+    $cache = apc_fetch($this->getAPCKey($cid));
     return $this->prepareItem($cache);
   }
 
@@ -146,7 +146,7 @@ public function getMultiple(&$cids) {
     // Translate the requested cache item IDs to APC keys.
     $map = array();
     foreach ($cids as $cid) {
-      $map[$this->getApcKey($cid)] = $cid;
+      $map[$this->getAPCKey($cid)] = $cid;
     }
 
     $result = apc_fetch(array_keys($map));
@@ -228,21 +228,21 @@ public function set($cid, $data, $expire = CacheBackendInterface::CACHE_PERMANEN
 
     // apc_store()'s $ttl argument can be omitted but also set to 0 (zero),
     // which happens to be identical to CACHE_PERMANENT.
-    apc_store($this->getApcKey($cid), $cache, $expire);
+    apc_store($this->getAPCKey($cid), $cache, $expire);
   }
 
   /**
    * Implements Drupal\Core\Cache\CacheBackendInterface::delete().
    */
   public function delete($cid) {
-    apc_delete($this->getApcKey($cid));
+    apc_delete($this->getAPCKey($cid));
   }
 
   /**
    * Implements Drupal\Core\Cache\CacheBackendInterface::deleteMultiple().
    */
   public function deleteMultiple(array $cids) {
-    apc_delete(array_map(array($this, 'getApcKey'), $cids));
+    apc_delete(array_map(array($this, 'getAPCKey'), $cids));
   }
 
   /**
diff --git a/core/modules/system/lib/Drupal/system/Tests/Cache/ApcBackendUnitTest.php b/core/modules/system/lib/Drupal/system/Tests/Cache/APCBackendUnitTest.php
similarity index 87%
rename from core/modules/system/lib/Drupal/system/Tests/Cache/ApcBackendUnitTest.php
rename to core/modules/system/lib/Drupal/system/Tests/Cache/APCBackendUnitTest.php
index db50165..0c2b085 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Cache/ApcBackendUnitTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Cache/APCBackendUnitTest.php
@@ -2,12 +2,12 @@
 
 /**
  * @file
- * Contains Drupal\system\Tests\Cache\ApcBackendUnitTest.
+ * Contains Drupal\system\Tests\Cache\APCBackendUnitTest.
  */
 
 namespace Drupal\system\Tests\Cache;
 
-use Drupal\Core\Cache\ApcBackend;
+use Drupal\Core\Cache\APCBackend;
 
 /**
  * Tests the APC cache backend.
@@ -23,7 +23,7 @@
  *   might be possible to flush them in a tearDown() override method in this
  *   class though.
  */
-class ApcBackendUnitTest extends GenericCacheBackendUnitTestBase {
+class APCBackendUnitTest extends GenericCacheBackendUnitTestBase {
 
   public static function getInfo() {
     return array(
@@ -50,6 +50,6 @@ protected function checkRequirements() {
   }
 
   protected function createCacheBackend($bin) {
-    return new ApcBackend($bin);
+    return new APCBackend($bin);
   }
 }