Index: Ringtoets/Revetment/test/Ringtoets.Revetment.Data.TestUtil.Test/TestWaveConditionsCalculationTest.cs
===================================================================
diff -u -rac5d52dfa559def14c89499c0f819754ed3b446c -r741860b313c16e7a2f918c734c85180886665a80
--- Ringtoets/Revetment/test/Ringtoets.Revetment.Data.TestUtil.Test/TestWaveConditionsCalculationTest.cs	(.../TestWaveConditionsCalculationTest.cs)	(revision ac5d52dfa559def14c89499c0f819754ed3b446c)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.Data.TestUtil.Test/TestWaveConditionsCalculationTest.cs	(.../TestWaveConditionsCalculationTest.cs)	(revision 741860b313c16e7a2f918c734c85180886665a80)
@@ -35,7 +35,7 @@
             var calculation = new TestWaveConditionsCalculation();
 
             // Assert
-            Assert.IsInstanceOf<ICalculation<WaveConditionsInput>>(calculation);
+            Assert.IsInstanceOf<ICalculation<TestWaveConditionsInput>>(calculation);
             Assert.IsInstanceOf<Observable>(calculation);
             Assert.AreEqual("Nieuwe berekening", calculation.Name);
             Assert.IsNull(calculation.Output);
Index: Ringtoets/Revetment/test/Ringtoets.Revetment.Data.TestUtil/TestWaveConditionsCalculation.cs
===================================================================
diff -u -rc7069ba91ff360559c23076e7a3931dcacbacffa -r741860b313c16e7a2f918c734c85180886665a80
--- Ringtoets/Revetment/test/Ringtoets.Revetment.Data.TestUtil/TestWaveConditionsCalculation.cs	(.../TestWaveConditionsCalculation.cs)	(revision c7069ba91ff360559c23076e7a3931dcacbacffa)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.Data.TestUtil/TestWaveConditionsCalculation.cs	(.../TestWaveConditionsCalculation.cs)	(revision 741860b313c16e7a2f918c734c85180886665a80)
@@ -31,28 +31,23 @@
     /// Creates a simple <see cref="ICalculation{T}"/> implementation for
     /// wave conditions, which can have an object set as output.
     /// </summary>
-    /// <typeparam name="T">The type of the wave conditions input contained
-    /// by the test calculation.</typeparam>
-    public class TestWaveConditionsCalculation<T> : Observable, ICalculation<T>
-        where T : WaveConditionsInput
+    public class TestWaveConditionsCalculation : Observable, ICalculation<TestWaveConditionsInput>
     {
         /// <summary>
-        /// Creates a new instance of <see cref="TestWaveConditionsCalculation{T}"/>.
+        /// Creates a new instance of <see cref="TestWaveConditionsCalculation"/>.
         /// </summary>
-        /// <param name="waveConditionsInput">The wave conditions input to set to
-        /// the calculation.</param>
-        public TestWaveConditionsCalculation(T waveConditionsInput)
+        public TestWaveConditionsCalculation()
         {
             Name = RingtoetsCommonDataResources.Calculation_DefaultName;
-            InputParameters = waveConditionsInput;
+            InputParameters = new TestWaveConditionsInput();
         }
 
         /// <summary>
         /// Gets or sets an object that represents some output of this calculation.
         /// </summary>
         public object Output { get; set; }
 
-        public T InputParameters { get; }
+        public TestWaveConditionsInput InputParameters { get; }
 
         public bool HasOutput
         {