diff --git a/assets/js/toc (Scroll-Driven Implementation).js b/assets/js/toc (Scroll-Driven Implementation).js
index caf33b3..ec97792 100644
--- a/assets/js/toc (Scroll-Driven Implementation).js	
+++ b/assets/js/toc (Scroll-Driven Implementation).js	
@@ -216,7 +216,10 @@ document.addEventListener('DOMContentLoaded', function () {
         }
 
         var rect = article.getBoundingClientRect();
-        var total = Math.max(article.offsetHeight - window.innerHeight, 1);
+        var total = Math.max(
+            Math.max(article.scrollHeight, article.offsetHeight) - window.innerHeight,
+            1
+        );
 
         var progress = Math.min(
             Math.max((-rect.top / total) * 100, 0),
diff --git a/assets/js/toc.js b/assets/js/toc.js
index 8424293..ec97792 100644
--- a/assets/js/toc.js
+++ b/assets/js/toc.js
@@ -216,7 +216,10 @@ document.addEventListener('DOMContentLoaded', function () {
         }
 
         var rect = article.getBoundingClientRect();
-        var total = Math.max(article.scrollHeight - window.innerHeight, 1);
+        var total = Math.max(
+            Math.max(article.scrollHeight, article.offsetHeight) - window.innerHeight,
+            1
+        );
 
         var progress = Math.min(
             Math.max((-rect.top / total) * 100, 0),