diff --git a/js/main.js b/js/main.js
index c9ee6284..7246ca87 100644
--- a/js/main.js
+++ b/js/main.js
@@ -206,7 +206,7 @@ const observer = new MutationObserver(function(mutations) {
       // Add padding to the messages container to create room for the last message.
       // The purpose of this is to avoid constant scrolling during streaming in
       // instruct mode.
-      const bufferHeight = Math.max(0, Math.max(0.7 * window.innerHeight, window.innerHeight - prevSibling.offsetHeight - 84) - lastChild.offsetHeight);
+      const bufferHeight = Math.max(0, Math.max(window.innerHeight - 128 - 84, window.innerHeight - prevSibling.offsetHeight - 84) - lastChild.offsetHeight);
       messagesContainer.style.paddingBottom = `${bufferHeight}px`;
     }
   }