diff --git a/apps/files_external/lib/config.php b/apps/files_external/lib/config.php
index e3ef47c83506..ac91b1d5a557 100644
--- a/apps/files_external/lib/config.php
+++ b/apps/files_external/lib/config.php
@@ -221,7 +221,7 @@ public static function getBackendStatus($class, $options, $isPersonal, $testOnly
 			return StorageNotAvailableException::STATUS_SUCCESS;
 		}
 		foreach ($options as $key => $option) {
-			$option[$key] = self::setUserVars(OCP\User::getUser(), $option);
+			$options[$key] = self::setUserVars(OCP\User::getUser(), $option);
 		}
 		if (class_exists($class)) {
 			try {