diff --git a/VectoCore/VectoCoreTest/Models/SimulationComponent/GearboxTest.cs b/VectoCore/VectoCoreTest/Models/SimulationComponent/GearboxTest.cs
index b9b5cbdc53d07e5de336b313d61e877791a34be0..c5490509372da21b4d1afa51935bc88c5a683e88 100644
--- a/VectoCore/VectoCoreTest/Models/SimulationComponent/GearboxTest.cs
+++ b/VectoCore/VectoCoreTest/Models/SimulationComponent/GearboxTest.cs
@@ -536,7 +536,8 @@ namespace TUGraz.VectoCore.Tests.Models.SimulationComponent
 				Altitude = 0.SI<Meter>(),
 				VehicleMass = 10000.SI<Kilogram>(),
 				ReducedMassWheels = 100.SI<Kilogram>(),
-				TotalMass = 19000.SI<Kilogram>()
+				TotalMass = 19000.SI<Kilogram>(),
+				EngineSpeed = n.SI<PerSecond>()
 			};
 			var gearboxData = MockSimulationDataFactory.CreateGearboxDataFromFile(GearboxDataFile, EngineDataFile);
 			var runData = GetDummyRunData(gearboxData);