diff --git a/docs/api.rst b/docs/api.rst
index e2f77de97..4a8233065 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -493,6 +493,7 @@ Debug
     :param payload: The message that is about to be passed on to the
                     WebSocket library. It can be :class:`bytes` to denote a binary
                     message or :class:`str` to denote a regular text message.
+    :type payload: Union[:class:`bytes`, :class:`str`]
 
 
 Gateway
@@ -1363,7 +1364,7 @@ Threads
     .. versionadded:: 2.0
 
     :param payload: The raw event payload data.
-    :type member: :class:`RawThreadMembersUpdate`
+    :type payload: :class:`RawThreadMembersUpdate`
 
 Voice
 ~~~~~~