diff --git a/Step.Model/DTOModels/ToolModels/DTOSiemensToolModel.cs b/Step.Model/DTOModels/ToolModels/DTOSiemensToolModel.cs
index 3c26dfd6..8a91a5f4 100644
--- a/Step.Model/DTOModels/ToolModels/DTOSiemensToolModel.cs
+++ b/Step.Model/DTOModels/ToolModels/DTOSiemensToolModel.cs
@@ -57,7 +57,7 @@ namespace Step.Model.DTOModels.ToolModels
         public bool InChangeTool { get; set; }
 
         [Required]
-        public bool InUse { get; set; }
+        public bool IsInUse { get; set; }
 
         [Required]
         public bool PreAlarm { get; set; }
@@ -92,7 +92,7 @@ namespace Step.Model.DTOModels.ToolModels
                 IsEnabled = dtoModel.IsEnabled,
                 IsActive = dtoModel.IsActive,
                 IsInhibited = dtoModel.IsInhibited,
-                IsInUse = dtoModel.InUse,
+                IsInUse = dtoModel.IsInUse,
                 IsMeasured = dtoModel.IsMeasured,
                 InChangeTool = dtoModel.InChangeTool,
                 InFixedPlace = dtoModel.InFixedPlace,