diff --git a/docs/ref/signals.txt b/docs/ref/signals.txt
index 823545dd07a..175d6599af6 100644
--- a/docs/ref/signals.txt
+++ b/docs/ref/signals.txt
@@ -277,6 +277,8 @@ like this::
 
 If we connected a handler like this::
 
+    from django.db.models.signals import m2m_changed
+
     def toppings_changed(sender, **kwargs):
         # Do something
         pass