diff --git a/api/core/file/file_manager.py b/api/core/file/file_manager.py
index 4a50fb85c9..810a2187b2 100644
--- a/api/core/file/file_manager.py
+++ b/api/core/file/file_manager.py
@@ -31,7 +31,7 @@ def get_attr(*, file: File, attr: FileAttribute):
         case FileAttribute.TRANSFER_METHOD:
             return file.transfer_method.value
         case FileAttribute.URL:
-            return file.remote_url
+            return _to_url(file)
         case FileAttribute.EXTENSION:
             return file.extension