Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs
===================================================================
diff -u -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146 -r8047e7fd59525ed424105aaefc4ee88b9ae8def6
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision 8047e7fd59525ed424105aaefc4ee88b9ae8def6)
@@ -56,6 +56,18 @@
             }
         }
 
+        public override double Contribution
+        {
+            get
+            {
+                return NormProbabilityInput.Contribution;
+            }
+            set
+            {
+                NormProbabilityInput.Contribution = value;
+            }
+        }
+
         /// <summary>
         /// Gets the length-effect parameters.
         /// </summary>