diff --git a/lib/private/memcache/cache.php b/lib/private/memcache/cache.php
index 03671b3f24..c606d94fa5 100644
--- a/lib/private/memcache/cache.php
+++ b/lib/private/memcache/cache.php
@@ -8,7 +8,7 @@
 
 namespace OC\Memcache;
 
-abstract class Cache implements \ArrayAccess {
+abstract class Cache implements \ArrayAccess, \OCP\ICache {
 	/**
 	 * @var string $prefix
 	 */