Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.IO.Test/WaveImpactAsphaltCoverConfigurationWriterTest.cs
===================================================================
diff -u -r7348fb685e44d6eb4abf2854c8298c0a2189d67e -r020439f88aaed9dd51967acbc8518f37c95791d1
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.IO.Test/WaveImpactAsphaltCoverConfigurationWriterTest.cs	(.../WaveImpactAsphaltCoverConfigurationWriterTest.cs)	(revision 7348fb685e44d6eb4abf2854c8298c0a2189d67e)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.IO.Test/WaveImpactAsphaltCoverConfigurationWriterTest.cs	(.../WaveImpactAsphaltCoverConfigurationWriterTest.cs)	(revision 020439f88aaed9dd51967acbc8518f37c95791d1)
@@ -78,20 +78,16 @@
             };
 
             var calculationGroup = new CalculationGroup("NestedGroup", false);
-            var rootGroup = new CalculationGroup
-            {
-                Children =
-                {
-                    calculation,
-                    calculationGroup
-                }
-            };
             try
             {
                 var writer = new WaveImpactAsphaltCoverConfigurationWriter();
 
                 // Call
-                writer.Write(rootGroup, filePath);
+                writer.Write(new ICalculationBase[]
+                {
+                    calculation,
+                    calculationGroup
+                }, filePath);
 
                 // Assert
                 string actualXml = File.ReadAllText(filePath);