diff --git a/src/main/java/bc1/gream/domain/buy/service/command/BuyCommandService.java b/src/main/java/bc1/gream/domain/buy/service/command/BuyCommandService.java
index 611b336a..e473f744 100644
--- a/src/main/java/bc1/gream/domain/buy/service/command/BuyCommandService.java
+++ b/src/main/java/bc1/gream/domain/buy/service/command/BuyCommandService.java
@@ -26,7 +26,7 @@ public void deleteBuyByIdAndUser(Buy buy, User buyer) {
         buyRepository.delete(buy);
     }
 
-    public boolean isBuyerLoggedInUser(Buy buy, User user) {
+    private boolean isBuyerLoggedInUser(Buy buy, User user) {
         return buy.getUser().getLoginId().equals(user.getLoginId());
     }