diff --git a/beet_observer/data_pack.py b/beet_observer/data_pack.py
index 9c15d81..87ff4c6 100644
--- a/beet_observer/data_pack.py
+++ b/beet_observer/data_pack.py
@@ -214,8 +214,10 @@ def gen_registry_overlay(
     else:
         # check if files are exactly the same
         try:
-            if isinstance(registry[name],Structure):
-                registry_overlay[name].data['DataVersion'] = registry[name].data['DataVersion']
+            if isinstance(registry[name], Structure):
+                registry_overlay[name].data["DataVersion"] = registry[name].data[
+                    "DataVersion"
+                ]
             if registry[name].data != registry_overlay[name].data:
                 # move file from overlay pack to overlay in build pack
                 ctx.data.overlays[overlay_dir][name] = registry_overlay[name]