diff --git a/mercurial/help.py b/mercurial/help.py
--- a/mercurial/help.py
+++ b/mercurial/help.py
@@ -219,6 +219,8 @@ internalstable = sorted([
      loaddoc('revlogs', subdir='internals')),
     (['wireprotocol'], _('Wire Protocol'),
      loaddoc('wireprotocol', subdir='internals')),
+    (['wireprotocolrpc'], _('Wire Protocol RPC'),
+     loaddoc('wireprotocolrpc', subdir='internals')),
     (['wireprotocolv2'], _('Wire Protocol Version 2'),
      loaddoc('wireprotocolv2', subdir='internals')),
 ])
diff --git a/tests/test-help.t b/tests/test-help.t
--- a/tests/test-help.t
+++ b/tests/test-help.t
@@ -1017,6 +1017,8 @@ internals topic renders index of availab
        requirements  Repository Requirements
        revlogs       Revision Logs
        wireprotocol  Wire Protocol
+       wireprotocolrpc
+                     Wire Protocol RPC
        wireprotocolv2
                      Wire Protocol Version 2
 
@@ -3346,6 +3348,13 @@ Sub-topic indexes rendered properly
   Wire Protocol
   </td></tr>
   <tr><td>
+  <a href="/help/internals.wireprotocolrpc">
+  wireprotocolrpc
+  </a>
+  </td><td>
+  Wire Protocol RPC
+  </td></tr>
+  <tr><td>
   <a href="/help/internals.wireprotocolv2">
   wireprotocolv2
   </a>