diff --git a/apps/user_ldap/lib/connection.php b/apps/user_ldap/lib/connection.php
index 173c4ebcc2..1ac803d374 100644
--- a/apps/user_ldap/lib/connection.php
+++ b/apps/user_ldap/lib/connection.php
@@ -56,7 +56,7 @@ class Connection extends LDAPUtility {
 		if($memcache->isAvailable()) {
 			$this->cache = $memcache->create();
 		} else {
-			$this->cache = \OC_Cache::getGlobalCache();
+			$this->cache = \OC\Cache::getGlobalCache();
 		}
 		$this->hasPagedResultSupport =
 			$this->ldap->hasPagedResultSupport();
diff --git a/apps/user_ldap/lib/proxy.php b/apps/user_ldap/lib/proxy.php
index 0eb294eb7a..1e10164894 100644
--- a/apps/user_ldap/lib/proxy.php
+++ b/apps/user_ldap/lib/proxy.php
@@ -31,7 +31,7 @@ abstract class Proxy {
 
 	public function __construct(ILDAPWrapper $ldap) {
 		$this->ldap = $ldap;
-		$this->cache = \OC_Cache::getGlobalCache();
+		$this->cache = \OC\Cache::getGlobalCache();
 	}
 
 	private function addAccess($configPrefix) {
diff --git a/core/avatar/controller.php b/core/avatar/controller.php
index 2269382446..06efbec3f3 100644
--- a/core/avatar/controller.php
+++ b/core/avatar/controller.php
@@ -71,7 +71,7 @@ class Controller {
 			$image = new \OC_Image($newAvatar);
 
 			if ($image->valid()) {
-				\OC_Cache::set('tmpavatar', $image->data(), 7200);
+				\OC\Cache::set('tmpavatar', $image->data(), 7200);
 				\OC_JSON::error(array("data" => "notsquare"));
 			} else {
 				$l = new \OC_L10n('core');
@@ -109,7 +109,7 @@ class Controller {
 		\OC_JSON::checkLoggedIn();
 		\OC_JSON::callCheck();
 
-		$tmpavatar = \OC_Cache::get('tmpavatar');
+		$tmpavatar = \OC\Cache::get('tmpavatar');
 		if (is_null($tmpavatar)) {
 			$l = new \OC_L10n('core');
 			\OC_JSON::error(array("data" => array("message" => $l->t("No temporary profile picture available, try again")) ));
@@ -136,7 +136,7 @@ class Controller {
 			return;
 		}
 
-		$tmpavatar = \OC_Cache::get('tmpavatar');
+		$tmpavatar = \OC\Cache::get('tmpavatar');
 		if (is_null($tmpavatar)) {
 			$l = new \OC_L10n('core');
 			\OC_JSON::error(array("data" => array("message" => $l->t("No temporary profile picture available, try again")) ));
@@ -149,7 +149,7 @@ class Controller {
 			$avatar = new \OC_Avatar($user);
 			$avatar->set($image->data());
 			// Clean up
-			\OC_Cache::remove('tmpavatar');
+			\OC\Cache::remove('tmpavatar');
 			\OC_JSON::success();
 		} catch (\Exception $e) {
 			\OC_JSON::error(array("data" => array("message" => $e->getMessage()) ));
diff --git a/lib/private/legacy/cache.php b/lib/private/legacy/cache.php
deleted file mode 100644
index f915eb516b..0000000000
--- a/lib/private/legacy/cache.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-/**
- * Copyright (c) 2013 Thomas Tanghus (thomas@tanghus.net)
- * This file is licensed under the Affero General Public License version 3 or
- * later.
- * See the COPYING-README file.
- */
-
-class OC_Cache extends \OC\Cache {
-}
\ No newline at end of file
diff --git a/lib/private/route/router.php b/lib/private/route/router.php
index f7900362be..44b0b94150 100644
--- a/lib/private/route/router.php
+++ b/lib/private/route/router.php
@@ -90,7 +90,7 @@ class Router implements IRouter {
 			$files[] = 'settings/routes.php';
 			$files[] = 'core/routes.php';
 			$files[] = 'ocs/routes.php';
-			$this->cacheKey = \OC_Cache::generateCacheKeyFromFiles($files);
+			$this->cacheKey = \OC\Cache::generateCacheKeyFromFiles($files);
 		}
 		return $this->cacheKey;
 	}