diff --git a/js/navigation/sidebar.js b/js/navigation/sidebar.js
index c8c699b01e12199487bb82f4ea930be2fb700e55..3f830c738a43bad1b20e2ad19ba1567d3663beb4 100644
--- a/js/navigation/sidebar.js
+++ b/js/navigation/sidebar.js
@@ -110,7 +110,7 @@
 
     // Gin Custom start ---------------------
     if (toState === true && window.innerWidth < breakpointLarge) {
-      Drupal.ginSidebar.collapseSidebar();
+      Drupal.ginSidebar?.collapseSidebar();
     }
     // Gin Custom end ------------------------
   }