diff --git a/tests/helpers.ts b/tests/helpers.ts
index 048a702..10c4b95 100644
--- a/tests/helpers.ts
+++ b/tests/helpers.ts
@@ -55,6 +55,7 @@ export function makeConfig(overrides: ConfigOverrides = {}): AppConfig {
     dir: target.dir,
     allowDirectories: target.allowDirectories ?? false,
     allowedMimeTypes: target.allowedMimeTypes ?? allowedMimeTypes,
+    permission:target.permission?? 0o666
   }));
 
   return {