Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingCalculationTest.cs
===================================================================
diff -u -r8b37c0f11e7d78b71c298763124973e94845c87b -r6df492af2166d167f1a154b7997c85a4118b1759
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingCalculationTest.cs	(.../PipingCalculationTest.cs)	(revision 8b37c0f11e7d78b71c298763124973e94845c87b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingCalculationTest.cs	(.../PipingCalculationTest.cs)	(revision 6df492af2166d167f1a154b7997c85a4118b1759)
@@ -41,7 +41,7 @@
             var calculation = new PipingCalculation(generalInputParameters);
 
             // Assert
-            Assert.IsInstanceOf<ICalculation>(calculation);
+            Assert.IsInstanceOf<ICalculation<PipingInput>>(calculation);
             Assert.IsInstanceOf<CloneableObservable>(calculation);
 
             Assert.AreEqual("Nieuwe berekening", calculation.Name);