Index: Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.Test/Model/SerializableAssemblyTest.cs
===================================================================
diff -u -rb50aa5c330d5c514ef0727cb9b732094c228eb46 -rc37e7aa9fdd38a0476335e056b33c583486ed1af
--- Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.Test/Model/SerializableAssemblyTest.cs	(.../SerializableAssemblyTest.cs)	(revision b50aa5c330d5c514ef0727cb9b732094c228eb46)
+++ Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.Test/Model/SerializableAssemblyTest.cs	(.../SerializableAssemblyTest.cs)	(revision c37e7aa9fdd38a0476335e056b33c583486ed1af)
@@ -66,12 +66,13 @@
             Assert.AreEqual("featureMember", xmlArrayAttribute.ElementName);
 
             IEnumerable<XmlArrayItemAttribute> xmlArrayItemAttributes = TypeUtils.GetPropertyAttributes<SerializableAssembly, XmlArrayItemAttribute>(nameof(SerializableAssembly.FeatureMembers));
-            Assert.AreEqual(5, xmlArrayItemAttributes.Count());
+            Assert.AreEqual(6, xmlArrayItemAttributes.Count());
             Assert.AreEqual(typeof(SerializableAssessmentProcess), xmlArrayItemAttributes.ElementAt(0).Type);
             Assert.AreEqual(typeof(SerializableAssessmentSection), xmlArrayItemAttributes.ElementAt(1).Type);
             Assert.AreEqual(typeof(SerializableTotalAssemblyResult), xmlArrayItemAttributes.ElementAt(2).Type);
             Assert.AreEqual(typeof(SerializableFailureMechanism), xmlArrayItemAttributes.ElementAt(3).Type);
             Assert.AreEqual(typeof(SerializableFailureMechanismSectionAssembly), xmlArrayItemAttributes.ElementAt(4).Type);
+            Assert.AreEqual(typeof(SerializableFailureMechanismSections), xmlArrayItemAttributes.ElementAt(5).Type);
         }
 
         [Test]
@@ -211,6 +212,8 @@
                                                                      SerializableAssemblyGroup.Group4,
                                                                      new SerializableFailureMechanismAssemblyResult(SerializableAssemblyMethod.WBI1A1, SerializableFailureMechanismCategoryGroup.IIt));
 
+            var sections1 = new SerializableFailureMechanismSections("sections1", failureMechanism1);
+
             var result1 = new SerializableFailureMechanismSectionAssembly("sr1",
                                                                           failureMechanism1,
                                                                           new[]
@@ -227,7 +230,8 @@
                                                         assessmentProcess,
                                                         totalAssemblyResult,
                                                         failureMechanism1,
-                                                        result1
+                                                        result1,
+                                                        sections1
                                                     });
 
             serializer.Serialize(writer, assembly, xmlns);