diff --git a/apps/files_external/lib/storageconfig.php b/apps/files_external/lib/storageconfig.php
index 97e0386be7336cfe688833b7fb78656de668ac56..49a40a9a5d79ad884b25fba09dc842957ce155f3 100644
--- a/apps/files_external/lib/storageconfig.php
+++ b/apps/files_external/lib/storageconfig.php
@@ -163,7 +163,7 @@ class StorageConfig implements \JsonSerializable {
 	}
 
 	/**
-	 * @param Backend
+	 * @param Backend $backend
 	 */
 	public function setBackend(Backend $backend) {
 		$this->backend= $backend;
@@ -177,7 +177,7 @@ class StorageConfig implements \JsonSerializable {
 	}
 
 	/**
-	 * @param AuthMechanism
+	 * @param AuthMechanism $authMechanism
 	 */
 	public function setAuthMechanism(AuthMechanism $authMechanism) {
 		$this->authMechanism = $authMechanism;