diff --git a/backend/services/mining-blockchain-service/src/infrastructure/persistence/repositories/adoption-injection-record.repository.impl.ts b/backend/services/mining-blockchain-service/src/infrastructure/persistence/repositories/adoption-injection-record.repository.impl.ts
index 789caf46..9e0dc0b9 100644
--- a/backend/services/mining-blockchain-service/src/infrastructure/persistence/repositories/adoption-injection-record.repository.impl.ts
+++ b/backend/services/mining-blockchain-service/src/infrastructure/persistence/repositories/adoption-injection-record.repository.impl.ts
@@ -43,8 +43,8 @@ export class AdoptionInjectionRecordRepositoryImpl implements IAdoptionInjection
   }
 
   async findByAdoptionId(adoptionId: string): Promise<AdoptionInjectionRecordDto | null> {
-    const record = await this.prisma.adoptionInjectionRecord.findUnique({
-      where: { uk_adoption_id: { adoptionId } },
+    const record = await this.prisma.adoptionInjectionRecord.findFirst({
+      where: { adoptionId },
     });
     return record ? this.mapToDto(record) : null;
   }