diff --git a/apps/files_external/controller/globalstoragescontroller.php b/apps/files_external/controller/globalstoragescontroller.php
index 64bbf0feb3..069e41a96b 100644
--- a/apps/files_external/controller/globalstoragescontroller.php
+++ b/apps/files_external/controller/globalstoragescontroller.php
@@ -24,6 +24,7 @@ namespace OCA\Files_External\Controller;
 
 
 use \OCP\IConfig;
+use OCP\ILogger;
 use \OCP\IUserSession;
 use \OCP\IRequest;
 use \OCP\IL10N;
@@ -46,18 +47,21 @@ class GlobalStoragesController extends StoragesController {
 	 * @param IRequest $request request object
 	 * @param IL10N $l10n l10n service
 	 * @param GlobalStoragesService $globalStoragesService storage service
+	 * @param ILogger $logger
 	 */
 	public function __construct(
 		$AppName,
 		IRequest $request,
 		IL10N $l10n,
-		GlobalStoragesService $globalStoragesService
+		GlobalStoragesService $globalStoragesService,
+		ILogger $logger
 	) {
 		parent::__construct(
 			$AppName,
 			$request,
 			$l10n,
-			$globalStoragesService
+			$globalStoragesService,
+			$logger
 		);
 	}
 
diff --git a/apps/files_external/controller/storagescontroller.php b/apps/files_external/controller/storagescontroller.php
index b09774ef51..d71c4ff5ef 100644
--- a/apps/files_external/controller/storagescontroller.php
+++ b/apps/files_external/controller/storagescontroller.php
@@ -25,6 +25,7 @@ namespace OCA\Files_External\Controller;
 
 
 use \OCP\IConfig;
+use OCP\ILogger;
 use OCP\IUser;
 use \OCP\IUserSession;
 use \OCP\IRequest;
@@ -60,6 +61,11 @@ abstract class StoragesController extends Controller {
 	 */
 	protected $service;
 
+	/**
+	 * @var ILogger
+	 */
+	protected $logger;
+
 	/**
 	 * Creates a new storages controller.
 	 *
@@ -67,16 +73,19 @@ abstract class StoragesController extends Controller {
 	 * @param IRequest $request request object
 	 * @param IL10N $l10n l10n service
 	 * @param StoragesService $storagesService storage service
+	 * @param ILogger $logger
 	 */
 	public function __construct(
 		$AppName,
 		IRequest $request,
 		IL10N $l10n,
-		StoragesService $storagesService
+		StoragesService $storagesService,
+		ILogger $logger
 	) {
 		parent::__construct($AppName, $request);
 		$this->l10n = $l10n;
 		$this->service = $storagesService;
+		$this->logger = $logger;
 	}
 
 	/**
@@ -115,7 +124,7 @@ abstract class StoragesController extends Controller {
 				$priority
 			);
 		} catch (\InvalidArgumentException $e) {
-			\OC::$server->getLogger()->logException($e);
+			$this->logger->logException($e);
 			return new DataResponse(
 				[
 					'message' => (string)$this->l10n->t('Invalid backend or authentication mechanism class')
@@ -129,7 +138,7 @@ abstract class StoragesController extends Controller {
 	 * Validate storage config
 	 *
 	 * @param StorageConfig $storage storage config
-	 *
+	 *1
 	 * @return DataResponse|null returns response in case of validation error
 	 */
 	protected function validate(StorageConfig $storage) {
diff --git a/apps/files_external/controller/userglobalstoragescontroller.php b/apps/files_external/controller/userglobalstoragescontroller.php
index 6b39b3dc92..c6b51d9404 100644
--- a/apps/files_external/controller/userglobalstoragescontroller.php
+++ b/apps/files_external/controller/userglobalstoragescontroller.php
@@ -24,6 +24,7 @@ namespace OCA\Files_External\Controller;
 use OCA\Files_External\Lib\Auth\AuthMechanism;
 use OCA\Files_External\Lib\Auth\IUserProvided;
 use OCA\Files_External\Lib\InsufficientDataForMeaningfulAnswerException;
+use OCP\ILogger;
 use \OCP\IRequest;
 use \OCP\IL10N;
 use \OCP\AppFramework\Http\DataResponse;
@@ -57,13 +58,15 @@ class UserGlobalStoragesController extends StoragesController {
 		IRequest $request,
 		IL10N $l10n,
 		UserGlobalStoragesService $userGlobalStoragesService,
-		IUserSession $userSession
+		IUserSession $userSession,
+		ILogger $logger
 	) {
 		parent::__construct(
 			$AppName,
 			$request,
 			$l10n,
-			$userGlobalStoragesService
+			$userGlobalStoragesService,
+			$logger
 		);
 		$this->userSession = $userSession;
 	}
diff --git a/apps/files_external/controller/userstoragescontroller.php b/apps/files_external/controller/userstoragescontroller.php
index ccf8bc24e0..2a2a0bc63a 100644
--- a/apps/files_external/controller/userstoragescontroller.php
+++ b/apps/files_external/controller/userstoragescontroller.php
@@ -25,6 +25,7 @@ namespace OCA\Files_External\Controller;
 
 use OCA\Files_External\Lib\Auth\AuthMechanism;
 use \OCP\IConfig;
+use OCP\ILogger;
 use OCP\IUser;
 use \OCP\IUserSession;
 use \OCP\IRequest;
@@ -55,19 +56,22 @@ class UserStoragesController extends StoragesController {
 	 * @param IL10N $l10n l10n service
 	 * @param UserStoragesService $userStoragesService storage service
 	 * @param IUserSession $userSession
+	 * @param ILogger $logger
 	 */
 	public function __construct(
 		$AppName,
 		IRequest $request,
 		IL10N $l10n,
 		UserStoragesService $userStoragesService,
-		IUserSession $userSession
+		IUserSession $userSession,
+		ILogger $logger
 	) {
 		parent::__construct(
 			$AppName,
 			$request,
 			$l10n,
-			$userStoragesService
+			$userStoragesService,
+			$logger
 		);
 		$this->userSession = $userSession;
 	}
diff --git a/apps/files_external/tests/controller/globalstoragescontrollertest.php b/apps/files_external/tests/controller/globalstoragescontrollertest.php
index a3c911b511..9256569f22 100644
--- a/apps/files_external/tests/controller/globalstoragescontrollertest.php
+++ b/apps/files_external/tests/controller/globalstoragescontrollertest.php
@@ -41,7 +41,8 @@ class GlobalStoragesControllerTest extends StoragesControllerTest {
 			'files_external',
 			$this->getMock('\OCP\IRequest'),
 			$this->getMock('\OCP\IL10N'),
-			$this->service
+			$this->service,
+			$this->getMock('\OCP\ILogger')
 		);
 	}
 }
diff --git a/apps/files_external/tests/controller/userstoragescontrollertest.php b/apps/files_external/tests/controller/userstoragescontrollertest.php
index 671e019fea..342f6b8538 100644
--- a/apps/files_external/tests/controller/userstoragescontrollertest.php
+++ b/apps/files_external/tests/controller/userstoragescontrollertest.php
@@ -49,7 +49,8 @@ class UserStoragesControllerTest extends StoragesControllerTest {
 			$this->getMock('\OCP\IRequest'),
 			$this->getMock('\OCP\IL10N'),
 			$this->service,
-			$this->getMock('\OCP\IUserSession')
+			$this->getMock('\OCP\IUserSession'),
+			$this->getMock('\OCP\ILogger')
 		);
 	}