diff --git a/web/src/hooks/logic-hooks.ts b/web/src/hooks/logic-hooks.ts
index 961b6a7a69..1174cbe97d 100644
--- a/web/src/hooks/logic-hooks.ts
+++ b/web/src/hooks/logic-hooks.ts
@@ -279,7 +279,8 @@ export const useSendMessageWithSse = () => {
                 if (typeof d !== 'boolean') {
                   setAnswer((prev) => {
                     const prevAnswer = prev.answer || '';
-                    const currentAnswer = d.final ? '' : d.answer || '';
+                    const currentAnswer =
+                      d.final && prevAnswer ? '' : d.answer || '';
 
                     let newAnswer: string;
                     if (prevAnswer && currentAnswer.startsWith(prevAnswer)) {