diff --git a/lib/Doctrine/ORM/Cache/Region/DefaultMultiGetRegion.php b/lib/Doctrine/ORM/Cache/Region/DefaultMultiGetRegion.php
index 39bf9c9e8..7ecf73311 100644
--- a/lib/Doctrine/ORM/Cache/Region/DefaultMultiGetRegion.php
+++ b/lib/Doctrine/ORM/Cache/Region/DefaultMultiGetRegion.php
@@ -57,8 +57,9 @@ class DefaultMultiGetRegion extends DefaultRegion
     public function getMultiple(CollectionCacheEntry $collection)
     {
         $keysToRetrieve = array();
+
         foreach ($collection->identifiers as $index => $key) {
-            $keysToRetrieve[$index] = $this->name . '_' . $key->hash;
+            $keysToRetrieve[$index] = $this->getCacheEntryKey($key);
         }
 
         $items = $this->cache->fetchMultiple($keysToRetrieve);
@@ -70,6 +71,7 @@ class DefaultMultiGetRegion extends DefaultRegion
         foreach ($keysToRetrieve as $index => $key) {
             $returnableItems[$index] = $items[$key];
         }
+
         return $returnableItems;
     }
 }
diff --git a/lib/Doctrine/ORM/Cache/Region/DefaultRegion.php b/lib/Doctrine/ORM/Cache/Region/DefaultRegion.php
index b210a8d8d..324e27544 100644
--- a/lib/Doctrine/ORM/Cache/Region/DefaultRegion.php
+++ b/lib/Doctrine/ORM/Cache/Region/DefaultRegion.php
@@ -36,6 +36,8 @@ use Doctrine\ORM\Cache\Region;
  */
 class DefaultRegion implements Region
 {
+    const REGION_KEY_SEPARATOR = '_';
+
     /**
      * @var CacheAdapter
      */
@@ -84,7 +86,7 @@ class DefaultRegion implements Region
      */
     public function contains(CacheKey $key)
     {
-        return $this->cache->contains($this->name . '_' . $key->hash);
+        return $this->cache->contains($this->getCacheEntryKey($key));
     }
 
     /**
@@ -92,7 +94,7 @@ class DefaultRegion implements Region
      */
     public function get(CacheKey $key)
     {
-        return $this->cache->fetch($this->name . '_' . $key->hash) ?: null;
+        return $this->cache->fetch($this->getCacheEntryKey($key)) ?: null;
     }
 
     /**
@@ -103,7 +105,7 @@ class DefaultRegion implements Region
         $result = array();
 
         foreach ($collection->identifiers as $key) {
-            $entry = $this->cache->fetch($this->name . '_' . $key->hash);
+            $entry = $this->cache->fetch($this->getCacheEntryKey($key));
             if ($entry === false) {
                 $result = null;
                 break;
@@ -115,12 +117,21 @@ class DefaultRegion implements Region
         return $result;
     }
 
+    /**
+     * @param CacheKey $key
+     * @return string
+     */
+    protected function getCacheEntryKey(CacheKey $key)
+    {
+        return $this->name . self::REGION_KEY_SEPARATOR . $key->hash;
+    }
+
     /**
      * {@inheritdoc}
      */
     public function put(CacheKey $key, CacheEntry $entry, Lock $lock = null)
     {
-        return $this->cache->save($this->name . '_' . $key->hash, $entry, $this->lifetime);
+        return $this->cache->save($this->getCacheEntryKey($key), $entry, $this->lifetime);
     }
 
     /**
@@ -128,7 +139,7 @@ class DefaultRegion implements Region
      */
     public function evict(CacheKey $key)
     {
-        return $this->cache->delete($this->name . '_' . $key->hash);
+        return $this->cache->delete($this->getCacheEntryKey($key));
     }
 
     /**