diff --git a/core/models.py b/core/models.py
index 41b12ccf..fb28faa6 100644
--- a/core/models.py
+++ b/core/models.py
@@ -185,6 +185,7 @@ def get_group(*, pk: int = None, name: str = None) -> Optional[Group]:
     if pk is None and name is None:
         raise ValueError("Either pk or name must be set")
 
+    # replace space characters to hide warnings with memcached backend
     pk_or_name: Union[str, int] = pk if pk is not None else name.replace(" ", "_")
     group = cache.get(f"sith_group_{pk_or_name}")