diff --git a/src/main/java/com/backend/elearning/domain/order/OrderDetailRepository.java b/src/main/java/com/backend/elearning/domain/order/OrderDetailRepository.java
index 98faa69..768f363 100644
--- a/src/main/java/com/backend/elearning/domain/order/OrderDetailRepository.java
+++ b/src/main/java/com/backend/elearning/domain/order/OrderDetailRepository.java
@@ -29,7 +29,7 @@ select count(1)
     @Query("""
             select c.id
             from OrderDetail od
-            left join fetch od.course c
+            join od.course c
             GROUP BY c.id
             ORDER BY COUNT(c.id) DESC
         """)
@@ -40,7 +40,7 @@ ORDER BY COUNT(c.id) DESC
         select od 
         from OrderDetail od 
         join fetch od.order o 
-        left join fetch od.course
+        join fetch  od.course
         where o.id = :orderId
     """)
     List<OrderDetail> findByOrderId (@Param("orderId") Long orderId);