diff --git a/shared/views/autocomplete.py b/shared/views/autocomplete.py
index e8d90590..708fe554 100644
--- a/shared/views/autocomplete.py
+++ b/shared/views/autocomplete.py
@@ -28,6 +28,8 @@ class ModelSearch(Generic[M]):
     >>> user_search.search(["toto", "foo"])  # returns a queryset of Users
     """
 
+    # This says that `model` is the class corresponding to the type variable M (or a
+    # subclass).
     model: Type[M]
     search_fields: Iterable[str]