Index: Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.KernelWrapper.TestUtil.Test/Kernels/Assembly/FailureMechanismAssemblyKernelStubTest.cs
===================================================================
diff -u -recd4e132deb2683aadc0f83f0853dc1b79602033 -raba56da8ee04d8d526cb4f969b74962705e57445
--- Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.KernelWrapper.TestUtil.Test/Kernels/Assembly/FailureMechanismAssemblyKernelStubTest.cs	(.../FailureMechanismAssemblyKernelStubTest.cs)	(revision ecd4e132deb2683aadc0f83f0853dc1b79602033)
+++ Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.KernelWrapper.TestUtil.Test/Kernels/Assembly/FailureMechanismAssemblyKernelStubTest.cs	(.../FailureMechanismAssemblyKernelStubTest.cs)	(revision aba56da8ee04d8d526cb4f969b74962705e57445)
@@ -43,6 +43,7 @@
             // Assert
             Assert.IsInstanceOf<IFailureMechanismResultAssembler>(kernel);
             Assert.IsFalse(kernel.Calculated);
+            Assert.IsNull(kernel.PartialAssembly);
             Assert.IsNull(kernel.AssessmentSectionInput);
             Assert.IsNull(kernel.FailureMechanismInput);
             Assert.IsNull(kernel.FailureMechanismAssemblyResult);
@@ -104,7 +105,7 @@
             Assert.AreEqual("Message", exception.Message);
             Assert.IsNotNull(exception.InnerException);
             Assert.IsNull(kernel.FmSectionAssemblyResultsInput);
-            Assert.IsFalse(kernel.PartialAssembly);
+            Assert.IsNull(kernel.PartialAssembly);
             Assert.IsFalse(kernel.Calculated);
             Assert.AreEqual(EFailureMechanismCategory.It, kernel.FailureMechanismCategoryResult);
         }
@@ -190,7 +191,7 @@
             Assert.IsNull(kernel.AssessmentSectionInput);
             Assert.IsNull(kernel.FailureMechanismInput);
             Assert.IsNull(kernel.FmSectionAssemblyResultsInput);
-            Assert.IsFalse(kernel.PartialAssembly);
+            Assert.IsNull(kernel.PartialAssembly);
             Assert.IsFalse(kernel.Calculated);
             Assert.AreEqual(EFailureMechanismCategory.It, kernel.FailureMechanismCategoryResult);
         }
Index: Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.KernelWrapper.TestUtil/Kernels/Assembly/FailureMechanismAssemblyKernelStub.cs
===================================================================
diff -u -rd89cc4a956ba2c77c8b54c58da0b4e58a90c8d5d -raba56da8ee04d8d526cb4f969b74962705e57445
--- Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.KernelWrapper.TestUtil/Kernels/Assembly/FailureMechanismAssemblyKernelStub.cs	(.../FailureMechanismAssemblyKernelStub.cs)	(revision d89cc4a956ba2c77c8b54c58da0b4e58a90c8d5d)
+++ Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.KernelWrapper.TestUtil/Kernels/Assembly/FailureMechanismAssemblyKernelStub.cs	(.../FailureMechanismAssemblyKernelStub.cs)	(revision aba56da8ee04d8d526cb4f969b74962705e57445)
@@ -40,7 +40,7 @@
         /// <summary>
         /// Gets a value indicating whether an assembly is partial.
         /// </summary>
-        public bool PartialAssembly { get; private set; }
+        public bool? PartialAssembly { get; private set; }
 
         /// <summary>
         /// Gets the <see cref="AssessmentSection"/> used as input parameter for assembly methods.