Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/FailureMechanismSectionsContextTest.cs
===================================================================
diff -u -r76ace4042e4e8a92a0ba37e8e9a9373ed6cea951 -rd066b31047707b6fb1453bd83a65fe773b5838cb
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/FailureMechanismSectionsContextTest.cs	(.../FailureMechanismSectionsContextTest.cs)	(revision 76ace4042e4e8a92a0ba37e8e9a9373ed6cea951)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/FailureMechanismSectionsContextTest.cs	(.../FailureMechanismSectionsContextTest.cs)	(revision d066b31047707b6fb1453bd83a65fe773b5838cb)
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 
+using Core.Common.Base;
 using Core.Common.Base.Geometry;
 
 using NUnit.Framework;
@@ -44,6 +45,7 @@
             var context = new FailureMechanismSectionsContext(failureMechanism, assessmentSection);
 
             // Assert
+            Assert.IsInstanceOf<Observable>(context);
             Assert.AreSame(sectionsSequence, context.WrappedData);
             Assert.AreSame(failureMechanism, context.ParentFailureMechanism);
             Assert.AreSame(assessmentSection, context.ParentAssessmentSection);