diff --git a/src/patterns/04-components/menu/menu--horizontal/menu--horizontal.js b/src/patterns/04-components/menu/menu--horizontal/menu--horizontal.js
index 937e631dbd6c71a1e962518c0c96a9ad0d5942e1..367d5b49855e145f2a141a6c831a642b8c6d7059 100644
--- a/src/patterns/04-components/menu/menu--horizontal/menu--horizontal.js
+++ b/src/patterns/04-components/menu/menu--horizontal/menu--horizontal.js
@@ -121,12 +121,12 @@
                     menu.querySelector('.submenu-active').classList.remove('submenu-active');
                   }
                 }
-                document.addEventListener('click', closeSubmenu, FALSE);
+                document.addEventListener('click', closeSubmenu, false);
               }
 
               for (let item of items) {
                 if (item.querySelector('.menu__subnav')) {
-                  item.addEventListener('click', toggleItem, FALSE);
+                  item.addEventListener('click', toggleItem, false);
                 }
                 // Add event listeners to keyup event of enter
                 // and escape keys for the menu--items .
@@ -157,7 +157,7 @@
               // If Toggle on page Add event
               // listeners on the menu toggle button.
               if (toggle) {
-                toggle.addEventListener('click', toggleMenu, FALSE);
+                toggle.addEventListener('click', toggleMenu, false);
               }
 
               // Apply timeout to the to event firing