diff --git a/www/html/Game/public/js/play.js b/www/html/Game/public/js/play.js
index fba8ea9..f91f460 100644
--- a/www/html/Game/public/js/play.js
+++ b/www/html/Game/public/js/play.js
@@ -2142,6 +2142,8 @@
       if (!o.botPath || o.botPath.length === 0) {
         tryQuizCarryInteractionForPlayer(id, o.x, o.y, { silent: true });
       }
+      /* ตอบถูกแล้ว pickNext เริ่มนับถอยหลัง → quizCarryCurrent เป็น null ในรอบ forEach เดียวกัน */
+      if (!quizCarryCurrent) return;
       const tier = o.botTier || 'avg';
       const pCorrect = tier === 'sharp' ? 0.9 : tier === 'weak' ? 0.35 : 0.65;
       const rawWant = Math.random() < pCorrect ? quizCarryCurrent.correctIndex
diff --git a/www/html/Game/public/play.html b/www/html/Game/public/play.html
index 3458907..21ae70b 100644
--- a/www/html/Game/public/play.html
+++ b/www/html/Game/public/play.html
@@ -692,7 +692,7 @@
   </div>
   <script src="/Game/socket.io/socket.io.js"></script>
   <script src="js/version.js?v=0.0166"></script>
-  <script src="js/play.js?v=0.086"></script>
+  <script src="js/play.js?v=0.087"></script>
   <div class="version-tag">v —</div>
 </body>
 </html>