diff --git a/apps/files_external/lib/Command/Backends.php b/apps/files_external/lib/Command/Backends.php
index 7fab0477adfca..55479787fe7c4 100644
--- a/apps/files_external/lib/Command/Backends.php
+++ b/apps/files_external/lib/Command/Backends.php
@@ -95,7 +95,7 @@ private function serializeAuthBackend(\JsonSerializable $backend): array {
 	 */
 	private function formatConfiguration(array $parameters): array {
 		$configuration = array_filter($parameters, function (DefinitionParameter $parameter) {
-			return $parameter->isFlagSet(DefinitionParameter::FLAG_HIDDEN);
+			return !$parameter->isFlagSet(DefinitionParameter::FLAG_HIDDEN);
 		});
 		return array_map(function (DefinitionParameter $parameter) {
 			return $parameter->getTypeName();