diff --git a/src/modules/admin/pages/courses/units/ModifyQuiz.jsx b/src/modules/admin/pages/courses/units/ModifyQuiz.jsx
index 95f1b20..0acc460 100644
--- a/src/modules/admin/pages/courses/units/ModifyQuiz.jsx
+++ b/src/modules/admin/pages/courses/units/ModifyQuiz.jsx
@@ -393,7 +393,10 @@ export default function ModifyQuiz() {
 
     if (!quizId) {
       const res = await createQuiz(courseId, unitId, meta);
-      quizId = res?.data?.data?.data?.quiz_id;
+      // res is the raw response body: { status, message, data: { data: quiz } }
+      // (createQuiz() itself unwraps the same object as data?.data?.data to get
+      // the quiz row — this needs the same two levels, not three).
+      quizId = res?.data?.data?.quiz_id;
       if (!quizId) return;
       setLocalQuiz((prev) => ({ ...prev, quiz_id: quizId }));
     } else {