diff --git a/earthdaily/earthdatastore/cube_utils/asset_mapper/__init__.py b/earthdaily/earthdatastore/cube_utils/asset_mapper/__init__.py
index 3d064d10..5bab2e79 100644
--- a/earthdaily/earthdatastore/cube_utils/asset_mapper/__init__.py
+++ b/earthdaily/earthdatastore/cube_utils/asset_mapper/__init__.py
@@ -20,7 +20,7 @@ def _collection_exists(self, collection, raise_warning=False):
         return exists
 
     def map_collection_bands(self, collection, bands):
-        if isinstance(bands, (dict|None)):
+        if isinstance(bands, (dict | None)):
             return bands
         if not self._collection_exists(collection):
             return bands