diff --git a/backend/services/mining-service/src/application/queries/get-mining-account.query.ts b/backend/services/mining-service/src/application/queries/get-mining-account.query.ts
index 2147b86c..487fd4e4 100644
--- a/backend/services/mining-service/src/application/queries/get-mining-account.query.ts
+++ b/backend/services/mining-service/src/application/queries/get-mining-account.query.ts
@@ -58,10 +58,10 @@ export class GetMiningAccountQuery {
         this.accountRepository.getTotalContribution(),
       ]);
 
-      if (config && totalContribution.toNumber() > 0) {
-        const userContribution = account.totalContribution.toNumber();
-        const secondDistribution = config.secondDistribution.toNumber();
-        const ratio = userContribution / totalContribution.toNumber();
+      if (config && totalContribution.value.toNumber() > 0) {
+        const userContribution = account.totalContribution.value.toNumber();
+        const secondDistribution = config.secondDistribution.value.toNumber();
+        const ratio = userContribution / totalContribution.value.toNumber();
         perSecondEarning = (ratio * secondDistribution).toFixed(8);
       }
     } catch {