diff --git a/rhodecode/templates/pullrequests/pullrequest_show.html b/rhodecode/templates/pullrequests/pullrequest_show.html
--- a/rhodecode/templates/pullrequests/pullrequest_show.html
+++ b/rhodecode/templates/pullrequests/pullrequest_show.html
@@ -54,7 +54,7 @@ ${self.context_bar('showpullrequest')}
           </div>
           <div class="input">
             % if len(c.pull_request_pending_reviewers) > 0:
-                <div class="tooltip" title="${h.tooltip(','.join([x.username for x in c.pull_request_pending_reviewers]))}">${ungettext('%d reviewer', '%d reviewers',len(c.pull_request_pending_reviewers)) % len(c.pull_request_pending_reviewers)}</div>
+                <div class="tooltip" title="${h.tooltip(', '.join([x.username for x in c.pull_request_pending_reviewers]))}">${ungettext('%d reviewer', '%d reviewers',len(c.pull_request_pending_reviewers)) % len(c.pull_request_pending_reviewers)}</div>
             %else:
                 <div>${_('Pull request was reviewed by all reviewers')}</div>
             %endif