diff --git a/rhodecode/templates/base/root.html b/rhodecode/templates/base/root.html
--- a/rhodecode/templates/base/root.html
+++ b/rhodecode/templates/base/root.html
@@ -51,6 +51,8 @@
                 'Open new pull request for selected changesets':  "${_('Open new pull request for selected changesets')}",
                 'Show selected changes __S -> __E': "${_('Show selected changes __S -> __E')}",
                 'Selection link': "${_('Selection link')}",
+                'collapse diff': "${_('collapse diff')}",
+                'expand diff': "${_('expand diff')}",
             };
             var _TM = TRANSLATION_MAP;