diff --git a/src/Storage/Adapter/AbstractZendServer.php b/src/Storage/Adapter/AbstractZendServer.php
index 6a79518da..a3500c017 100644
--- a/src/Storage/Adapter/AbstractZendServer.php
+++ b/src/Storage/Adapter/AbstractZendServer.php
@@ -39,7 +39,8 @@ protected function internalGetItem(& $normalizedKey, & $success = null, & $casTo
         $prefix      = ($namespace === '') ? '' : $namespace . self::NAMESPACE_SEPARATOR;
 
         $result = $this->zdcFetch($prefix . $normalizedKey);
-        if ($result === null) {
+        if ($result === false) {
+            $result  = null;
             $success = false;
         } else {
             $success  = true;
diff --git a/src/Storage/Adapter/ZendServerDisk.php b/src/Storage/Adapter/ZendServerDisk.php
index 5400e7fd4..4abd70bfd 100644
--- a/src/Storage/Adapter/ZendServerDisk.php
+++ b/src/Storage/Adapter/ZendServerDisk.php
@@ -148,7 +148,7 @@ protected function zdcStore($internalKey, $value, $ttl)
      * Fetch a single item from Zend Data Disk Cache
      *
      * @param  string $internalKey
-     * @return mixed The stored value or NULL if item wasn't found
+     * @return mixed The stored value or FALSE if item wasn't found
      * @throws Exception\RuntimeException
      */
     protected function zdcFetch($internalKey)
diff --git a/src/Storage/Adapter/ZendServerShm.php b/src/Storage/Adapter/ZendServerShm.php
index db45de836..292de461b 100644
--- a/src/Storage/Adapter/ZendServerShm.php
+++ b/src/Storage/Adapter/ZendServerShm.php
@@ -103,7 +103,7 @@ protected function zdcStore($internalKey, $value, $ttl)
      * Fetch a single item from Zend Data SHM Cache
      *
      * @param  string $internalKey
-     * @return mixed The stored value or NULL if item wasn't found
+     * @return mixed The stored value or FALSE if item wasn't found
      * @throws Exception\RuntimeException
      */
     protected function zdcFetch($internalKey)
diff --git a/test/Storage/Adapter/AbstractZendServerTest.php b/test/Storage/Adapter/AbstractZendServerTest.php
index d838509d0..c316201c5 100644
--- a/test/Storage/Adapter/AbstractZendServerTest.php
+++ b/test/Storage/Adapter/AbstractZendServerTest.php
@@ -59,7 +59,7 @@ public function testGetItemFailed()
         $this->_storage->expects($this->once())
                        ->method('zdcFetch')
                        ->with($this->equalTo('ns' . AbstractZendServer::NAMESPACE_SEPARATOR . 'key'))
-                       ->will($this->returnValue(null));
+                       ->will($this->returnValue(false));
 
         $this->assertNull($this->_storage->getItem('key', $success));
         $this->assertFalse($success);