diff --git a/sites/docs/api/channel.rst b/sites/docs/api/channel.rst
index 3edb8ac..e71526f 100644
--- a/sites/docs/api/channel.rst
+++ b/sites/docs/api/channel.rst
@@ -1,4 +1,4 @@
-Channels
-========
+Channel
+=======
 
 .. automodule:: paramiko.channel
diff --git a/sites/docs/api/client.rst b/sites/docs/api/client.rst
index a0784d0..1661f97 100644
--- a/sites/docs/api/client.rst
+++ b/sites/docs/api/client.rst
@@ -1,4 +1,4 @@
-Clients
-=======
+Client
+======
 
 .. automodule:: paramiko.client
diff --git a/sites/docs/api/message.rst b/sites/docs/api/message.rst
index 986548b..8d531e0 100644
--- a/sites/docs/api/message.rst
+++ b/sites/docs/api/message.rst
@@ -1,4 +1,4 @@
-Protocol messages
-=================
+Message
+=======
 
 .. automodule:: paramiko.message
diff --git a/sites/docs/api/packet.rst b/sites/docs/api/packet.rst
index 72ad559..4089203 100644
--- a/sites/docs/api/packet.rst
+++ b/sites/docs/api/packet.rst
@@ -1,4 +1,4 @@
-Packet handling
-===============
+Packetizer
+==========
 
 .. automodule:: paramiko.packet