diff --git a/src/js/theme/navigation.js b/src/js/theme/navigation.js
index 6d8649bb7699862490a99b9d210ed96eacbbe639..a16d199a3f21e6f04461dced5d79ab75fa179296 100644
--- a/src/js/theme/navigation.js
+++ b/src/js/theme/navigation.js
@@ -12,7 +12,7 @@ var usePushState = (typeof history.pushState !== 'undefined');
     Get current scroller element
 */
 function getScroller() {
-    if (platform.isMobile()) {
+    if (platform.isSmallScreen()) {
         return $('.book-body');
     } else {
         return $('.body-inner');
diff --git a/src/js/theme/platform.js b/src/js/theme/platform.js
index df439aa83d56d2ce1ac5308a52ee2c849c046e93..ed69eaf550418afc606bbde7b6f221e9b6812e0f 100644
--- a/src/js/theme/platform.js
+++ b/src/js/theme/platform.js
@@ -1,5 +1,11 @@
+var $ = require('jquery');
+
 module.exports = {
     isMobile: function() {
         return ($(document).width() <= 600);
+    },
+    // Breakpoint for navigation links position
+    isSmallScreen: function() {
+        return ($(document).width() <= 1240);
     }
 };