diff --git a/js/slicknav/jquery-no-conflict.slicknav.js b/js/slicknav/jquery-no-conflict.slicknav.js
index ff7af8b..5850c2c 100644
--- a/js/slicknav/jquery-no-conflict.slicknav.js
+++ b/js/slicknav/jquery-no-conflict.slicknav.js
@@ -374,6 +374,10 @@
 
 (function($) {
 
+Drupal.admin = Drupal.admin || {};
+Drupal.admin.behaviors = Drupal.admin.behaviors || {};
+Drupal.admin.hashes = Drupal.admin.hashes || {};
+
 // Create the responsive menu using SlickNav.
 Drupal.admin.behaviors.responsivemenu = function (context, settings, $adminMenu) {
 
diff --git a/js/slicknav/jquery.slicknav.js b/js/slicknav/jquery.slicknav.js
index d9a29e2..9fb5675 100644
--- a/js/slicknav/jquery.slicknav.js
+++ b/js/slicknav/jquery.slicknav.js
@@ -374,6 +374,10 @@
 
 (function($) {
 
+Drupal.admin = Drupal.admin || {};
+Drupal.admin.behaviors = Drupal.admin.behaviors || {};
+Drupal.admin.hashes = Drupal.admin.hashes || {};
+
 // Create the responsive menu using SlickNav.
 Drupal.admin.behaviors.responsivemenu = function (context, settings, $adminMenu) {