diff --git a/docs-web/src/main/webapp/src/app/docs/controller/tag/Tag.js b/docs-web/src/main/webapp/src/app/docs/controller/tag/Tag.js
index 86338a63..ad18e99a 100644
--- a/docs-web/src/main/webapp/src/app/docs/controller/tag/Tag.js
+++ b/docs-web/src/main/webapp/src/app/docs/controller/tag/Tag.js
@@ -27,11 +27,10 @@ angular.module('docs').controller('Tag', function($scope, Restangular) {
 
   /**
    * Find children tags.
-   * @param parent
    */
   $scope.getChildrenTags = function(parent) {
     return _.filter($scope.tags, function(tag) {
-      return tag.parent === parent;
+      return tag.parent === parent || !tag.parent && !parent;
     });
   };
 });
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