diff --git a/AsbCloudInfrastructure/Repository/GtrWitsRepository.cs b/AsbCloudInfrastructure/Repository/GtrWitsRepository.cs
index 44b05a61..983c8755 100644
--- a/AsbCloudInfrastructure/Repository/GtrWitsRepository.cs
+++ b/AsbCloudInfrastructure/Repository/GtrWitsRepository.cs
@@ -58,13 +58,13 @@ namespace AsbCloudInfrastructure.Repository
             //    return cacheData;
             var dateEnd = dateBeginUtc.AddSeconds(intervalSec);
 
-            var queryWitsInt = db.WitsItemInt
+            var queryWitsInt = db.Set<WitsItemInt>()
                 .Where(d => d.IdTelemetry == telemetry.Id
                     && d.DateTime >= dateBeginUtc);
-            var queryWitsString = db.WitsItemString
+            var queryWitsString = db.Set<WitsItemString>()
                 .Where(d => d.IdTelemetry == telemetry.Id
                     && d.DateTime >= dateBeginUtc);
-            var queryWitsFloat = db.WitsItemFloat
+            var queryWitsFloat = db.Set<WitsItemFloat>()
                 .Where(d => d.IdTelemetry == telemetry.Id
                     && d.DateTime >= dateBeginUtc);