diff --git a/frontend/src/app/admin/cars/page.tsx b/frontend/src/app/admin/cars/page.tsx
index af62b70..d72a270 100644
--- a/frontend/src/app/admin/cars/page.tsx
+++ b/frontend/src/app/admin/cars/page.tsx
@@ -326,8 +326,8 @@ export default function CarsAdminPage() {
       const newBannerIds = localBannerSelections;
 
       console.log('=== Banner Update Debug ===');
-      console.log('Current banner IDs (from DB):', [...currentBannerIds]);
-      console.log('New banner IDs (user selection):', [...newBannerIds]);
+      console.log('Current banner IDs (from DB):', Array.from(currentBannerIds));
+      console.log('New banner IDs (user selection):', Array.from(newBannerIds));
 
       // 추가할 배너
       const toAdd: number[] = [];