diff --git a/lib/redmine/scm/adapters/mercurial/redminehelper.py b/lib/redmine/scm/adapters/mercurial/redminehelper.py
index 6eed7ed0a..bd82c0020 100644
--- a/lib/redmine/scm/adapters/mercurial/redminehelper.py
+++ b/lib/redmine/scm/adapters/mercurial/redminehelper.py
@@ -178,8 +178,6 @@ def rhsummary(ui, repo, **opts):
         ui.write('</repository>\n')
         ui.write('</rhsummary>\n')
 
-# This extension should be compatible with Mercurial 0.9.5.
-# Note that Mercurial 0.9.5 doesn't have extensions.wrapfunction().
 cmdtable = {
     'rhannotate': (rhannotate,
          [('r', 'rev', '', 'revision'),