diff --git a/vcsserver/hg.py b/vcsserver/hg.py
--- a/vcsserver/hg.py
+++ b/vcsserver/hg.py
@@ -458,7 +458,7 @@ class HgRemote(RemoteBase):
             match_filter = match(file_filter[0], '', [file_filter[1]])
         else:
             match_filter = file_filter
-        opts = diffopts(git=opt_git, ignorews=opt_ignorews, context=context)
+        opts = diffopts(git=opt_git, ignorews=opt_ignorews, context=context, showfunc=1)
 
         try:
             return "".join(patch.diff(