diff --git a/frontend/src/app/tld/[tld]/TldDetailClient.tsx b/frontend/src/app/tld/[tld]/TldDetailClient.tsx
index 49f9904..7ab3083 100644
--- a/frontend/src/app/tld/[tld]/TldDetailClient.tsx
+++ b/frontend/src/app/tld/[tld]/TldDetailClient.tsx
@@ -106,7 +106,7 @@ export default function TldDetailClient({ tld, initialData }: Props) {
     try {
       const domain = checkDomain.includes('.') ? checkDomain : `${checkDomain}.${tld}`
       const result = await api.checkDomain(domain)
-      setCheckResult({ available: result.available, domain })
+      setCheckResult({ available: result.is_available, domain })
     } catch (error) {
       console.error('Domain check failed:', error)
     } finally {