Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/Configurations/StructureCalculationConfigurationTest.cs
===================================================================
diff -u -r4011a127978bb211ddb1101a2c608ed9c991d06d -rcc1268d7cb906524d4cabcd4cbd9ae16676cf059
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/Configurations/StructureCalculationConfigurationTest.cs	(.../StructureCalculationConfigurationTest.cs)	(revision 4011a127978bb211ddb1101a2c608ed9c991d06d)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/Configurations/StructureCalculationConfigurationTest.cs	(.../StructureCalculationConfigurationTest.cs)	(revision cc1268d7cb906524d4cabcd4cbd9ae16676cf059)
@@ -48,6 +48,7 @@
             var configuration = new SimpleStructureCalculationConfiguration(name);
 
             // Assert
+            Assert.IsInstanceOf<IConfigurationItem>(configuration);
             Assert.AreEqual(name, configuration.Name);
             Assert.IsNull(configuration.ModelFactorSuperCriticalFlow);
             Assert.IsNull(configuration.StructureName);