diff --git a/lib/Cake/Cache/Cache.php b/lib/Cake/Cache/Cache.php
index 0ab340e8bc7..4cd44ad14ec 100644
--- a/lib/Cake/Cache/Cache.php
+++ b/lib/Cake/Cache/Cache.php
@@ -178,6 +178,7 @@ public static function config($key, $config = null) {
 		}
 		if (isset($config['engine']) && empty($config['className'])) {
 			$config['className'] = $config['engine'];
+			unset($config['engine']);
 		}
 		static::$_config[$key] = $config;
 	}
diff --git a/lib/Cake/Cache/CacheRegistry.php b/lib/Cake/Cache/CacheRegistry.php
index adeedd42fc4..51f66bdfa22 100644
--- a/lib/Cake/Cache/CacheRegistry.php
+++ b/lib/Cake/Cache/CacheRegistry.php
@@ -58,7 +58,7 @@ protected function _throwMissingClassError($class, $plugin) {
  * Create the cache engine instance.
  *
  * Part of the template method for Cake\Utility\ObjectRegistry::load()
- * @param string|CacheEngine $class The classname or object to make.
+ * @param string|CacheEngine|Closure $class The classname or object to make, or a closure factory.
  * @param array $settings An array of settings to use for the cache engine.
  * @return CacheEngine The constructed CacheEngine class.
  * @throws Cake\Error\Exception when an object doesn't implement
diff --git a/lib/Cake/Test/TestCase/Cache/CacheTest.php b/lib/Cake/Test/TestCase/Cache/CacheTest.php
index d4a6c93dffa..34531c322ca 100644
--- a/lib/Cake/Test/TestCase/Cache/CacheTest.php
+++ b/lib/Cake/Test/TestCase/Cache/CacheTest.php
@@ -219,7 +219,7 @@ public function testConfigRead() {
 		Cache::config('tests', $settings);
 		$expected = $settings;
 		$expected['className'] = $settings['engine'];
-		unset($settings['engine']);
+		unset($expected['engine']);
 		$this->assertEquals($expected, Cache::config('tests'));
 	}