Minor docs tweak.

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/api-guide/filtering.md b/docs/api-guide/filtering.md
index 92e312ab..14ab9a26 100644
--- a/docs/api-guide/filtering.md
+++ b/docs/api-guide/filtering.md
@@ -163,7 +163,7 @@ Note that you can use both an overridden `.get_queryset()` and generic filtering
 
 You can also provide your own generic filtering backend, or write an installable app for other developers to use.
 
-To do so override `BaseFilterBackend`, and override the `.filter_queryset(self, request, queryset, view)` method.
+To do so override `BaseFilterBackend`, and override the `.filter_queryset(self, request, queryset, view)` method.  The method should return a new, filtered queryset.
 
 To install the filter backend, set the `'FILTER_BACKEND'` key in your `'REST_FRAMEWORK'` setting, using the dotted import path of the filter backend class.