diff --git a/openpype/widgets/attribute_defs/files_widget.py b/openpype/widgets/attribute_defs/files_widget.py
index 5aa76d8754..87b98e2378 100644
--- a/openpype/widgets/attribute_defs/files_widget.py
+++ b/openpype/widgets/attribute_defs/files_widget.py
@@ -433,7 +433,7 @@ class MultiFilesWidget(QtWidgets.QFrame):
             filenames = index.data(FILENAMES_ROLE)
             for filename in filenames:
                 filepaths.add(os.path.join(dirpath, filename))
-        return filepaths
+        return list(filepaths)
 
     def set_filters(self, folders_allowed, exts_filter):
         self._files_proxy_model.set_allow_folders(folders_allowed)