diff --git a/src/main/java/org/ktc2/cokaen/wouldyouin/payment/application/PaymentService.java b/src/main/java/org/ktc2/cokaen/wouldyouin/payment/application/PaymentService.java
index 1763d9f..b6d1fe8 100644
--- a/src/main/java/org/ktc2/cokaen/wouldyouin/payment/application/PaymentService.java
+++ b/src/main/java/org/ktc2/cokaen/wouldyouin/payment/application/PaymentService.java
@@ -126,8 +126,7 @@ public Long approvePayment(Long orderId, String pgToken) {
         );
         paymentRepository.flush();
         ReservationRequest request = new ReservationRequest(payment.getEventId(), payment.getQuantity());
-        reservationService.create(payment.getPartnerUserId(), request);
-        return payment.getPartnerUserId();
+        return reservationService.create(payment.getPartnerUserId(), request).getId();
     }
 
     @Transactional