diff --git a/src/Netzmacht/Bootstrap/Components/Contao/ContentElement/Tab.php b/src/Netzmacht/Bootstrap/Components/Contao/ContentElement/Tab.php
index a8bfedc..f6289d3 100644
--- a/src/Netzmacht/Bootstrap/Components/Contao/ContentElement/Tab.php
+++ b/src/Netzmacht/Bootstrap/Components/Contao/ContentElement/Tab.php
@@ -108,7 +108,7 @@ private function initializeStartElement()
                 $cssId = $i . '-' . $cssId;
             }
 
-            $ids[]           = $cssId;
+            $ids[]          = $cssId;
             $tabs[$i]['id'] = $cssId;
 
             if ($t['type'] != 'dropdown' && !$tab) {
@@ -150,7 +150,7 @@ private function initializeSeparator()
                 $cssId = $i . '-' . $cssId;
             }
 
-            $ids[]           = $cssId;
+            $ids[]          = $cssId;
             $tabs[$i]['id'] = $cssId;
 
             if ($t['type'] != 'dropdown') {
diff --git a/src/Netzmacht/Bootstrap/Components/Modal/Subscriber.php b/src/Netzmacht/Bootstrap/Components/Modal/Subscriber.php
index df9d680..ca96b5f 100644
--- a/src/Netzmacht/Bootstrap/Components/Modal/Subscriber.php
+++ b/src/Netzmacht/Bootstrap/Components/Modal/Subscriber.php
@@ -148,7 +148,7 @@ public function replaceModalButtonInsertTag(ReplaceInsertTagsEvent $event)
 
             $classes = array_filter(explode(' ', $event->getParam(1)));
             $classes = array_map(
-                function($class) {
+                function ($class) {
                     return 'btn-' . $class;
                 },
                 $classes
@@ -378,6 +378,8 @@ private function replaceDeprecatedInsertTag(ReplaceInsertTagsEvent $event, $para
      * @param string $label   Optional custom label.
      *
      * @return Standalone|null
+     *
+     * @SuppressWarnings(PHPMD.Superglobals)
      */
     private function createLink($modelId, $label = null)
     {
diff --git a/src/Netzmacht/Bootstrap/Components/Navigation/Helper.php b/src/Netzmacht/Bootstrap/Components/Navigation/Helper.php
index 4f4ee38..875b07e 100644
--- a/src/Netzmacht/Bootstrap/Components/Navigation/Helper.php
+++ b/src/Netzmacht/Bootstrap/Components/Navigation/Helper.php
@@ -173,23 +173,16 @@ private function initialize()
 
         $attributes->addClass($this->template->level);
 
-        switch ($level) {
-            case '1':
-                $class = Bootstrap::getConfigVar('runtime.nav-class');
+        if ($level === '1') {
+            $class = Bootstrap::getConfigVar('runtime.nav-class');
 
-                if ($class) {
-                    $attributes->addClass('nav');
-                    $attributes->addClass($class);
-                    Bootstrap::setConfigVar('runtime.nav-class', '');
-                }
-
-                break;
-
-            case '2':
-                $attributes->addClass('dropdown-menu');
-                break;
-
-            default:
+            if ($class) {
+                $attributes->addClass('nav');
+                $attributes->addClass($class);
+                Bootstrap::setConfigVar('runtime.nav-class', '');
+            }
+        } elseif ($level === '2') {
+            $attributes->addClass('dropdown-menu');
         }
 
         if ($level > 1 && $this->template->items) {
@@ -197,9 +190,22 @@ private function initialize()
             $pageId = $this->template->items[0]['pid'];
             $page   = \PageModel::findByPk($pageId);
 
-            if ($level > 2 && $page && ($page->type == 'm17Folder' || $page->type == 'folder')) {
-               $this->setChildrenList(false);
+            if ($this->disableChildrenList($level, $page)) {
+                $this->setChildrenList(false);
             }
         }
     }
+
+    /**
+     * Should children list be disabled.
+     *
+     * @param int             $level Current level.
+     * @param \PageModel|null $page  Parent page.
+     *
+     * @return bool
+     */
+    private function disableChildrenList($level, $page)
+    {
+        return $level > 2 && $page && ($page->type == 'm17Folder' || $page->type == 'folder');
+    }
 }