diff --git a/docs/api.rst b/docs/api.rst
index f6661342e..8bd2b2cff 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -562,8 +562,7 @@ to handle it, which defaults to print a traceback and ignoring the exception.
 .. function:: on_group_join(channel, user)
               on_group_remove(channel, user)
 
-    Called when someone joins or leaves a group, i.e. a :class:`PrivateChannel`
-    with a :attr:`PrivateChannel.type` of :attr:`ChannelType.group`.
+    Called when someone joins or leaves a :class:`GroupChannel`.
 
     :param channel: The group that the user joined or left.
     :param user: The user that joined or left.