diff --git a/lib/private/App/AppManager.php b/lib/private/App/AppManager.php
index 77756999c793c698671cf90749ec48d5ee3fd57c..17addc86c9d840b184932feeb0e8d70d5966a54f 100644
--- a/lib/private/App/AppManager.php
+++ b/lib/private/App/AppManager.php
@@ -39,6 +39,7 @@ use OCP\App\ManagerEvent;
 use OCP\ICacheFactory;
 use OCP\IGroup;
 use OCP\IGroupManager;
+use OCP\ILogger;
 use OCP\IUser;
 use OCP\IUserSession;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
@@ -72,6 +73,9 @@ class AppManager implements IAppManager {
 	/** @var EventDispatcherInterface */
 	private $dispatcher;
 
+	/** @var ILogger */
+	private $logger;
+
 	/** @var string[] $appId => $enabled */
 	private $installedAppsCache;
 
@@ -98,12 +102,14 @@ class AppManager implements IAppManager {
 								AppConfig $appConfig,
 								IGroupManager $groupManager,
 								ICacheFactory $memCacheFactory,
-								EventDispatcherInterface $dispatcher) {
+								EventDispatcherInterface $dispatcher,
+								ILogger $logger) {
 		$this->userSession = $userSession;
 		$this->appConfig = $appConfig;
 		$this->groupManager = $groupManager;
 		$this->memCacheFactory = $memCacheFactory;
 		$this->dispatcher = $dispatcher;
+		$this->logger = $logger;
 	}
 
 	/**
@@ -220,7 +226,7 @@ class AppManager implements IAppManager {
 
 			if (!is_array($groupIds)) {
 				$jsonError = json_last_error();
-				\OC::$server->getLogger()->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError, ['app' => 'lib']);
+				$this->logger->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError, ['app' => 'lib']);
 				return false;
 			}
 
@@ -253,7 +259,7 @@ class AppManager implements IAppManager {
 
 			if (!is_array($groupIds)) {
 				$jsonError = json_last_error();
-				\OC::$server->getLogger()->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError, ['app' => 'lib']);
+				$this->logger->warning('AppManger::checkAppForUser - can\'t decode group IDs: ' . print_r($enabled, true) . ' - json error code: ' . $jsonError, ['app' => 'lib']);
 				return false;
 			}
 
diff --git a/lib/private/Server.php b/lib/private/Server.php
index 408b457ec390a5cededaeedb28df76880c785ddb..ed095f7a5fd4d3c319f75eca0f4857109697c9f6 100644
--- a/lib/private/Server.php
+++ b/lib/private/Server.php
@@ -695,7 +695,8 @@ class Server extends ServerContainer implements IServerContainer {
 				$c->query(\OC\AppConfig::class),
 				$c->getGroupManager(),
 				$c->getMemCacheFactory(),
-				$c->getEventDispatcher()
+				$c->getEventDispatcher(),
+				$c->getLogger()
 			);
 		});
 		$this->registerAlias('AppManager', AppManager::class);
diff --git a/tests/lib/App/AppManagerTest.php b/tests/lib/App/AppManagerTest.php
index ba693999205aa009f8befc14fe93bd567cf05e69..371c2373f81ce5cb5f0e0009450155b1e6532cdb 100644
--- a/tests/lib/App/AppManagerTest.php
+++ b/tests/lib/App/AppManagerTest.php
@@ -19,6 +19,7 @@ use OCP\ICache;
 use OCP\ICacheFactory;
 use OCP\IGroup;
 use OCP\IGroupManager;
+use OCP\ILogger;
 use OCP\IUser;
 use OCP\IUserSession;
 use OCP\IAppConfig;
@@ -90,6 +91,9 @@ class AppManagerTest extends TestCase {
 	/** @var EventDispatcherInterface|\PHPUnit_Framework_MockObject_MockObject */
 	protected $eventDispatcher;
 
+	/** @var ILogger|\PHPUnit_Framework_MockObject_MockObject */
+	protected $logger;
+
 	/** @var IAppManager */
 	protected $manager;
 
@@ -102,11 +106,12 @@ class AppManagerTest extends TestCase {
 		$this->cacheFactory = $this->createMock(ICacheFactory::class);
 		$this->cache = $this->createMock(ICache::class);
 		$this->eventDispatcher = $this->createMock(EventDispatcherInterface::class);
+		$this->logger = $this->createMock(ILogger::class);
 		$this->cacheFactory->expects($this->any())
 			->method('createDistributed')
 			->with('settings')
 			->willReturn($this->cache);
-		$this->manager = new AppManager($this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher);
+		$this->manager = new AppManager($this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher, $this->logger);
 	}
 
 	protected function expectClearCache() {
@@ -159,7 +164,7 @@ class AppManagerTest extends TestCase {
 		/** @var AppManager|\PHPUnit_Framework_MockObject_MockObject $manager */
 		$manager = $this->getMockBuilder(AppManager::class)
 			->setConstructorArgs([
-				$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher
+				$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher, $this->logger
 			])
 			->setMethods([
 				'getAppPath',
@@ -206,7 +211,7 @@ class AppManagerTest extends TestCase {
 		/** @var AppManager|\PHPUnit_Framework_MockObject_MockObject $manager */
 		$manager = $this->getMockBuilder(AppManager::class)
 			->setConstructorArgs([
-				$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher
+				$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher, $this->logger
 			])
 			->setMethods([
 				'getAppPath',
@@ -259,7 +264,7 @@ class AppManagerTest extends TestCase {
 		/** @var AppManager|\PHPUnit_Framework_MockObject_MockObject $manager */
 		$manager = $this->getMockBuilder(AppManager::class)
 			->setConstructorArgs([
-				$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher
+				$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher, $this->logger
 			])
 			->setMethods([
 				'getAppPath',
@@ -418,7 +423,7 @@ class AppManagerTest extends TestCase {
 	public function testGetAppsNeedingUpgrade() {
 		/** @var AppManager|\PHPUnit_Framework_MockObject_MockObject $manager */
 		$manager = $this->getMockBuilder(AppManager::class)
-			->setConstructorArgs([$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher])
+			->setConstructorArgs([$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher, $this->logger])
 			->setMethods(['getAppInfo'])
 			->getMock();
 
@@ -466,7 +471,7 @@ class AppManagerTest extends TestCase {
 	public function testGetIncompatibleApps() {
 		/** @var AppManager|\PHPUnit_Framework_MockObject_MockObject $manager */
 		$manager = $this->getMockBuilder(AppManager::class)
-			->setConstructorArgs([$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher])
+			->setConstructorArgs([$this->userSession, $this->appConfig, $this->groupManager, $this->cacheFactory, $this->eventDispatcher, $this->logger])
 			->setMethods(['getAppInfo'])
 			->getMock();
 
diff --git a/tests/lib/AppTest.php b/tests/lib/AppTest.php
index 5d98dc7df5799d88bbe69ea509a7cb4b48563409..954ffcfae7f1fd3a5d8e8eb38d2167ee3a721673 100644
--- a/tests/lib/AppTest.php
+++ b/tests/lib/AppTest.php
@@ -542,7 +542,8 @@ class AppTest extends \Test\TestCase {
 			$appConfig,
 			\OC::$server->getGroupManager(),
 			\OC::$server->getMemCacheFactory(),
-			\OC::$server->getEventDispatcher()
+			\OC::$server->getEventDispatcher(),
+			\OC::$server->getLogger()
 		));
 	}