Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensions.cs
===================================================================
diff -u -rd2bccf12592be5246fc438434a8eec34f24d68ff -r0b574af3a103290e7faf095d6f1cfbb38b08549e
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensions.cs	(.../GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensions.cs)	(revision d2bccf12592be5246fc438434a8eec34f24d68ff)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensions.cs	(.../GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensions.cs)	(revision 0b574af3a103290e7faf095d6f1cfbb38b08549e)
@@ -37,8 +37,8 @@
         /// <param name="sectionResult">The section result to get the assessment layer 2A for.</param>
         /// <param name="failureMechanism">The failure mechanism the calculations belong to.</param>
         /// <param name="assessmentSection">The assessment section the calculations belong to.</param>
-        /// <returns>The calculated assessment layer 2A; or <see cref="double.NaN"/> when there are no
-        /// is no calculation assigned to the section result or the calculation is not performed.</returns>
+        /// <returns>The calculated assessment layer 2A; or <see cref="double.NaN"/> when there is no
+        /// calculation assigned to the section result or the calculation is not performed.</returns>
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
         public static double GetAssessmentLayerTwoA(this GrassCoverErosionInwardsFailureMechanismSectionResult sectionResult,
                                                     GrassCoverErosionInwardsFailureMechanism failureMechanism,
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensionsTest.cs
===================================================================
diff -u -rd2bccf12592be5246fc438434a8eec34f24d68ff -r0b574af3a103290e7faf095d6f1cfbb38b08549e
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensionsTest.cs	(.../GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensionsTest.cs)	(revision d2bccf12592be5246fc438434a8eec34f24d68ff)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensionsTest.cs	(.../GrassCoverErosionInwardsFailureMechanismSection2aAssessmentResultExtensionsTest.cs)	(revision 0b574af3a103290e7faf095d6f1cfbb38b08549e)
@@ -113,10 +113,11 @@
             mocks.ReplayAll();
 
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
-            var failureMechanismSectionResult = new GrassCoverErosionInwardsFailureMechanismSectionResult(section);
+            var failureMechanismSectionResult = new GrassCoverErosionInwardsFailureMechanismSectionResult(section)
+            {
+                Calculation = new GrassCoverErosionInwardsCalculation()
+            };
 
-            failureMechanismSectionResult.Calculation = new GrassCoverErosionInwardsCalculation();
-
             // Call
             double assessmentLayerTwoA = failureMechanismSectionResult.GetAssessmentLayerTwoA(new GrassCoverErosionInwardsFailureMechanism(), assessmentSection);
 
@@ -134,15 +135,16 @@
             IAssessmentSection assessmentSection = AssessmentSectionHelper.CreateAssessmentSectionStub(failureMechanism, mocks);
 
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
-            var failureMechanismSectionResult = new GrassCoverErosionInwardsFailureMechanismSectionResult(section);
-
-            failureMechanismSectionResult.Calculation = new GrassCoverErosionInwardsCalculation
+            var failureMechanismSectionResult = new GrassCoverErosionInwardsFailureMechanismSectionResult(section)
             {
-                Output = new TestGrassCoverErosionInwardsOutput()
+                Calculation = new GrassCoverErosionInwardsCalculation
+                {
+                    Output = new TestGrassCoverErosionInwardsOutput()
+                }
             };
 
             // Call
-            double assessmentLayerTwoA = failureMechanismSectionResult.GetAssessmentLayerTwoA(new GrassCoverErosionInwardsFailureMechanism(), assessmentSection);
+            double assessmentLayerTwoA = failureMechanismSectionResult.GetAssessmentLayerTwoA(failureMechanism, assessmentSection);
 
             // Assert
             Assert.AreEqual(0.5, assessmentLayerTwoA);