Index: Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/FailureMechanismSectionResult.cs
===================================================================
diff -u -r41a37c93cb0b3e36ff7023c9f42b4e6225598b55 -re38a7c2baca2872af6319d535c6468133ea31fbc
--- Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/FailureMechanismSectionResult.cs	(.../FailureMechanismSectionResult.cs)	(revision 41a37c93cb0b3e36ff7023c9f42b4e6225598b55)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/FailureMechanismSectionResult.cs	(.../FailureMechanismSectionResult.cs)	(revision e38a7c2baca2872af6319d535c6468133ea31fbc)
@@ -42,13 +42,14 @@
                 throw new ArgumentNullException("section");
             }
             Section = section;
+            AssessmentLayerOne = AssessmentLayerOneState.NotAssessed;
             AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the state of the assessment layer one.
         /// </summary>
-        public bool AssessmentLayerOne { get; set; }
+        public AssessmentLayerOneState AssessmentLayerOne { get; set; }
 
         /// <summary>
         /// Gets or sets the value of the tailored assessment of safety.