diff --git a/doc/forum/Cannot_write_to_commitlock.mdwn b/doc/forum/Cannot_write_to_commitlock.mdwn
index 05490a799..07e53453a 100644
--- a/doc/forum/Cannot_write_to_commitlock.mdwn
+++ b/doc/forum/Cannot_write_to_commitlock.mdwn
@@ -26,3 +26,7 @@ Ian.
 The user is logging as ian, the same user as the laptop. I can push and pull git repos on the same server owned by the same user via ssh with no problem. I have deleted and re-started from scratch several times. However, for my use case I think it's simpler to keep the repo on my local computer and just rsync the web pages to the server.
 
 Ian.
+
+Ian, you've copied over the repo created by ikiwiki --setup, which contains hook/post-update - just remove that file which is not required anymore on the git server side.
+
+Serge