diff --git a/backend/services/transfer-service/src/infrastructure/kafka/outbox-publisher.service.ts b/backend/services/transfer-service/src/infrastructure/kafka/outbox-publisher.service.ts
index 02f4f828..7d1a1db2 100644
--- a/backend/services/transfer-service/src/infrastructure/kafka/outbox-publisher.service.ts
+++ b/backend/services/transfer-service/src/infrastructure/kafka/outbox-publisher.service.ts
@@ -27,11 +27,11 @@ export class OutboxPublisherService implements OnModuleInit, OnModuleDestroy {
     private readonly outboxRepository: OutboxRepository,
     private readonly configService: ConfigService,
   ) {
-    this.pollIntervalMs = this.configService.get<number>('OUTBOX_POLL_INTERVAL_MS', 1000);
-    this.batchSize = this.configService.get<number>('OUTBOX_BATCH_SIZE', 100);
-    this.cleanupIntervalMs = this.configService.get<number>('OUTBOX_CLEANUP_INTERVAL_MS', 3600000);
-    this.confirmationTimeoutMinutes = this.configService.get<number>('OUTBOX_CONFIRMATION_TIMEOUT_MINUTES', 5);
-    this.timeoutCheckIntervalMs = this.configService.get<number>('OUTBOX_TIMEOUT_CHECK_INTERVAL_MS', 60000);
+    this.pollIntervalMs = Number(this.configService.get('OUTBOX_POLL_INTERVAL_MS', 1000));
+    this.batchSize = Number(this.configService.get('OUTBOX_BATCH_SIZE', 100));
+    this.cleanupIntervalMs = Number(this.configService.get('OUTBOX_CLEANUP_INTERVAL_MS', 3600000));
+    this.confirmationTimeoutMinutes = Number(this.configService.get('OUTBOX_CONFIRMATION_TIMEOUT_MINUTES', 5));
+    this.timeoutCheckIntervalMs = Number(this.configService.get('OUTBOX_TIMEOUT_CHECK_INTERVAL_MS', 60000));
   }
 
   async onModuleInit() {