diff --git a/src/generators/legacy-html/assets/api.js b/src/generators/legacy-html/assets/api.js
index 8963eb75..6439cd66 100644
--- a/src/generators/legacy-html/assets/api.js
+++ b/src/generators/legacy-html/assets/api.js
@@ -214,7 +214,7 @@ function setupSidebarScroll() {
     return;
   }
 
-  link.scrollIntoView({ block: 'center' });
+  link.scrollIntoView({ behavior: 'smooth', block: 'center' });
 }
 
 // Initialize either on DOMContentLoaded or immediately if already loaded