Remove last traces of mimetools.
diff --git a/Doc/library/http.client.rst b/Doc/library/http.client.rst
index 9c89563..8138467 100644
--- a/Doc/library/http.client.rst
+++ b/Doc/library/http.client.rst
@@ -445,7 +445,7 @@
 
 .. attribute:: HTTPResponse.msg
 
-   A :class:`mimetools.Message` instance containing the response headers.
+   An :class:`email.message.Message` instance containing the response headers.
 
 
 .. attribute:: HTTPResponse.version