diff --git a/kallithea/templates/base/base.html b/kallithea/templates/base/base.html
--- a/kallithea/templates/base/base.html
+++ b/kallithea/templates/base/base.html
@@ -271,7 +271,7 @@
               });
           } else if (context == 'changelog') {
               if (e.choice.type == 'tag' || e.choice.type == 'book') {
-                  $("#branch_filter").append($('<option/>').val(e.choice.text));
+                  $("#branch_filter").append($('<'+'option/>').val(e.choice.text));
               }
               $("#branch_filter").val(e.choice.text).change();
           } else {
diff --git a/kallithea/templates/pullrequests/pullrequest.html b/kallithea/templates/pullrequests/pullrequest.html
--- a/kallithea/templates/pullrequests/pullrequest.html
+++ b/kallithea/templates/pullrequests/pullrequest.html
@@ -134,7 +134,7 @@ ${self.repo_context_bar('showpullrequest
                 var length = options.length;
                 for(var j = 0; j < length; j++)
                 {
-                  $optgroup.append($('<option/>').text(options[j][1]).val(options[j][0]));
+                  $optgroup.append($('<'+'option/>').text(options[j][1]).val(options[j][0]));
                 }
                 $other_ref.append($optgroup);
               }