diff --git a/backend/services/mining-service/src/application/services/mining-distribution.service.ts b/backend/services/mining-service/src/application/services/mining-distribution.service.ts
index 09baaeca..b56eff95 100644
--- a/backend/services/mining-service/src/application/services/mining-distribution.service.ts
+++ b/backend/services/mining-service/src/application/services/mining-distribution.service.ts
@@ -721,14 +721,14 @@ export class MiningDistributionService {
         aggregateId: config.id,
         eventType: 'MiningConfigUpdated',
         payload: {
-          totalShares: config.totalShares.toString(),
-          distributionPool: config.distributionPool.toString(),
-          remainingDistribution: newRemaining.toString(),
-          halvingPeriodYears: config.halvingPeriodYears,
-          currentEra: config.currentEra,
-          secondDistribution: config.secondDistribution.toString(),
-          isActive: config.isActive,
-          activatedAt: config.activatedAt?.toISOString(),
+          totalShares: config.totalShares?.toString() || '0',
+          distributionPool: config.distributionPool?.toString() || '0',
+          remainingDistribution: newRemaining?.toString() || '0',
+          halvingPeriodYears: config.halvingPeriodYears || 2,
+          currentEra: config.currentEra || 1,
+          secondDistribution: config.secondDistribution?.toString() || '0',
+          isActive: config.isActive || false,
+          activatedAt: config.activatedAt?.toISOString() || null,
         },
       });
       this.logger.debug('Published MiningConfigUpdated event');