diff --git a/apps/files_external/lib/AppInfo/Application.php b/apps/files_external/lib/AppInfo/Application.php
index c77a2ae5280f2c9fdbaed9e34a004ed5abcfa85b..f78411038fa779006f91d67958df3a513b934c08 100644
--- a/apps/files_external/lib/AppInfo/Application.php
+++ b/apps/files_external/lib/AppInfo/Application.php
@@ -89,10 +89,8 @@ class Application extends App implements IBackendProvider, IAuthMechanismProvide
 		];
 
 		if (!\OC_Util::runningOnWindows()) {
-			$backends += [
-				$container->query('OCA\Files_External\Lib\Backend\SMB'),
-				$container->query('OCA\Files_External\Lib\Backend\SMB_OC'),
-			];
+			$backends[] = $container->query('OCA\Files_External\Lib\Backend\SMB');
+			$backends[] = $container->query('OCA\Files_External\Lib\Backend\SMB_OC');
 		}
 
 		return $backends;