diff --git a/docs/filtering.rst b/docs/filtering.rst
index 63b72dd..cfecf2c 100644
--- a/docs/filtering.rst
+++ b/docs/filtering.rst
@@ -3,7 +3,9 @@ Filtering
Graphene integrates with
`django-filter `__ (< 2.0.0) to provide
-filtering of results. See the `usage
+filtering of results (this also means filtering is only compatible with Django < 2.0).
+
+See the `usage
documentation `__
for details on the format for ``filter_fields``.