diff --git a/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs b/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs
index 5d2d4750..d61d7fb4 100644
--- a/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs
+++ b/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs
@@ -85,7 +85,7 @@ namespace AsbCloudInfrastructure.Services.Subsystems
             var data = await GetOperationTimeAsync(request, token);
             if (data is null)
                 return null;
-            var statList = CalcStat(data, request, token);
+            var statList = await CalcStatAsync(data, request, token);
             return statList;
         }
 
@@ -109,7 +109,7 @@ namespace AsbCloudInfrastructure.Services.Subsystems
             return items;
         }
 
-        private async Task<IEnumerable<SubsystemStatDto>> CalcStat(IEnumerable<SubsystemOperationTimeDto> dtos, SubsystemOperationTimeRequest request, CancellationToken token)
+        private async Task<IEnumerable<SubsystemStatDto>> CalcStatAsync(IEnumerable<SubsystemOperationTimeDto> dtos, SubsystemOperationTimeRequest request, CancellationToken token)
         {
             var groupedDataSubsystems = dtos
                 .GroupBy(o => o.IdSubsystem);