diff --git a/src/js/page.js b/src/js/page.js
index 3e7da21..382e0b0 100644
--- a/src/js/page.js
+++ b/src/js/page.js
@@ -18,7 +18,13 @@ document.addEventListener("DOMContentLoaded", function() {
       // console.log(entry.intersectionRatio)
       console.log('entry', entry)
       console.log('current', current_intersectiong_entry)
-      if (entry.isIntersecting) {
+      if (current_intersectiong_entry !== null && current_intersectiong_entry.isIntersecting === false) {
+        //Previous entry not intersecting anymore remove class and find the new one
+        let res = findCorrespondingTocTitle(current_intersectiong_entry.target)
+        current_selected_toc.parentElement.classList.remove('bg-blue-800');
+        current_intersectiong_entry = null
+      }
+      if (entry.isIntersecting && current_intersectiong_entry === null) {
         console.log('processing')
         if (current_intersectiong_entry !== null && current_intersectiong_entry.target.getBoundingClientRect().y > 0) {
           console.log('stop')