diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs
index 94d1ea890620ea1e4e26969aeee9cd4f2bb8b3e8..c5b20e4b95ba08eae68ebc1cb8b6e6ff3d35a52a 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs
@@ -94,7 +94,6 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdaper
 			}
 
 			var retVal = SetCommonVehicleData(data);
-			retVal.GrossVehicleWeight = data.GrossVehicleMassRating;
 			retVal.TrailerGrossVehicleWeight = mission.TrailerGrossVehicleWeight;
 			retVal.CurbWeight += mission.BodyCurbWeight + mission.TrailerCurbWeight;
 			retVal.Loading = loading;
diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
index 7fd40021fb5e97c3a691e3bdc6ff7ba416c114f3..8bd1a0e5d17f4e9cecca9afb8d11274ae0522dca 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
@@ -57,6 +57,7 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdaper
 			var retVal = SetCommonVehicleData(data);
 
 			retVal.CurbWeight += data.CurbWeightExtra;
+			retVal.TrailerGrossVehicleWeight = 0.SI<Kilogram>();
 			retVal.Loading = data.Loading;
 			retVal.DynamicTyreRadius = data.DynamicTyreRadius;
 			retVal.CrossWindCorrectionMode = data.CrossWindCorrectionMode;