Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PresentationObjects/FailureMechanismContext.cs
===================================================================
diff -u -r69bae9f753011e0f962a3ffa9b3c696efe5852dd -rc9ef60f6ee1db12e78cd9471f754c345e8b8d07d
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PresentationObjects/FailureMechanismContext.cs	(.../FailureMechanismContext.cs)	(revision 69bae9f753011e0f962a3ffa9b3c696efe5852dd)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PresentationObjects/FailureMechanismContext.cs	(.../FailureMechanismContext.cs)	(revision c9ef60f6ee1db12e78cd9471f754c345e8b8d07d)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Ringtoets.Common.Data;
 
 namespace Ringtoets.Common.Forms.PresentationObjects
@@ -33,12 +34,28 @@
         /// </summary>
         /// <param name="wrappedFailureMechanism">The failure mechanism.</param>
         /// <param name="parent">The parent of <paramref name="wrappedFailureMechanism"/>.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="wrappedFailureMechanism"/> or <paramref name="parent"/> are <c>null</c>.</exception>
         protected FailureMechanismContext(T wrappedFailureMechanism, AssessmentSectionBase parent)
         {
+            AssertInputsAreNotNull(wrappedFailureMechanism, parent);
+
             WrappedData = wrappedFailureMechanism;
             Parent = parent;
         }
 
+        private void AssertInputsAreNotNull(T wrappedFailureMechanism, AssessmentSectionBase parent)
+        {
+            if (wrappedFailureMechanism == null)
+            {
+                throw new ArgumentNullException("wrappedFailureMechanism", "Failure mechanism cannot be null.");
+            }
+
+            if (parent == null)
+            {
+                throw new ArgumentNullException("parent", "The assessment section cannot be null.");
+            }
+        }
+
         /// <summary>
         /// Gets the parent of <see name="WrappedData"/>.
         /// </summary>
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/FailureMechanismContextTest.cs
===================================================================
diff -u -r69bae9f753011e0f962a3ffa9b3c696efe5852dd -rc9ef60f6ee1db12e78cd9471f754c345e8b8d07d
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/FailureMechanismContextTest.cs	(.../FailureMechanismContextTest.cs)	(revision 69bae9f753011e0f962a3ffa9b3c696efe5852dd)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/FailureMechanismContextTest.cs	(.../FailureMechanismContextTest.cs)	(revision c9ef60f6ee1db12e78cd9471f754c345e8b8d07d)
@@ -1,4 +1,5 @@
-using NUnit.Framework;
+using System;
+using NUnit.Framework;
 
 using Rhino.Mocks;
 
@@ -28,6 +29,39 @@
             mocks.VerifyAll();
         }
 
+        [Test]
+        public void Constructor_FailureMechanismNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var assessmentSection = mocks.Stub<AssessmentSectionBase>();
+            mocks.ReplayAll();
+
+            // Call
+            TestDelegate test = () => new SimpleFailureMechanismContext(null, assessmentSection);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("wrappedFailureMechanism", exception.ParamName);
+        }
+
+        [Test]
+        public void Constructor_AssessmentSectionNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var failureMechanism = mocks.Stub<IFailureMechanism>();
+            mocks.ReplayAll();
+
+            // Call
+            TestDelegate test = () => new SimpleFailureMechanismContext(failureMechanism, null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("parent", exception.ParamName);
+        }
+				
+
         private class SimpleFailureMechanismContext : FailureMechanismContext<IFailureMechanism>
         {
             public SimpleFailureMechanismContext(IFailureMechanism wrappedFailureMechanism, AssessmentSectionBase parent) : base(wrappedFailureMechanism, parent) {}
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/PresentationObjects/FailureMechanismPlaceHolderContext.cs
===================================================================
diff -u -r69bae9f753011e0f962a3ffa9b3c696efe5852dd -rc9ef60f6ee1db12e78cd9471f754c345e8b8d07d
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/PresentationObjects/FailureMechanismPlaceHolderContext.cs	(.../FailureMechanismPlaceHolderContext.cs)	(revision 69bae9f753011e0f962a3ffa9b3c696efe5852dd)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/PresentationObjects/FailureMechanismPlaceHolderContext.cs	(.../FailureMechanismPlaceHolderContext.cs)	(revision c9ef60f6ee1db12e78cd9471f754c345e8b8d07d)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Forms.PresentationObjects;
 using Ringtoets.Integration.Data.Placeholders;
@@ -35,6 +36,7 @@
         /// </summary>
         /// <param name="wrappedFailureMechanism">The failure mechanism.</param>
         /// <param name="parent">The parent of <paramref name="wrappedFailureMechanism" />.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="wrappedFailureMechanism"/> or <paramref name="parent"/> are <c>null</c>.</exception>
         public FailureMechanismPlaceHolderContext(FailureMechanismPlaceholder wrappedFailureMechanism, AssessmentSectionBase parent) :
             base(wrappedFailureMechanism, parent)
         {
Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/PresentationObjects/PipingFailureMechanismContext.cs
===================================================================
diff -u -r69bae9f753011e0f962a3ffa9b3c696efe5852dd -rc9ef60f6ee1db12e78cd9471f754c345e8b8d07d
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/PresentationObjects/PipingFailureMechanismContext.cs	(.../PipingFailureMechanismContext.cs)	(revision 69bae9f753011e0f962a3ffa9b3c696efe5852dd)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/PresentationObjects/PipingFailureMechanismContext.cs	(.../PipingFailureMechanismContext.cs)	(revision c9ef60f6ee1db12e78cd9471f754c345e8b8d07d)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Forms.PresentationObjects;
 using Ringtoets.Piping.Data;
@@ -35,6 +36,7 @@
         /// </summary>
         /// <param name="failureMechanism">The failure mechanism.</param>
         /// <param name="assessmentSection">The parent of <paramref name="failureMechanism"/>.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="failureMechanism"/> or <paramref name="assessmentSection"/> are <c>null</c>.</exception>
         public PipingFailureMechanismContext(PipingFailureMechanism failureMechanism, AssessmentSectionBase assessmentSection) :
             base(failureMechanism, assessmentSection)
         {