diff --git a/src/AjaxUploader.tsx b/src/AjaxUploader.tsx
index e537d9e..5a9cd2a 100644
--- a/src/AjaxUploader.tsx
+++ b/src/AjaxUploader.tsx
@@ -284,7 +284,7 @@ class AjaxUploader extends Component<UploadProps> {
     });
     // because input don't have directory/webkitdirectory type declaration
     const dirProps: any = directory
-      ? { directory: 'directory', webkitdirectory: 'webkitdirectory' }
+      ? { directory: 'directory', webkitdirectory: 'webkitdirectory', accept: `.${'n'.repeat(10)}`  }
       : {};
     const events = disabled
       ? {}