Index: Ringtoets/Common/src/Ringtoets.Common.Data/AssessmentSection/IAssessmentSection.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -rb65d15356848af2be97a4a1df055e0044bd9d0c3
--- Ringtoets/Common/src/Ringtoets.Common.Data/AssessmentSection/IAssessmentSection.cs	(.../IAssessmentSection.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/AssessmentSection/IAssessmentSection.cs	(.../IAssessmentSection.cs)	(revision b65d15356848af2be97a4a1df055e0044bd9d0c3)
@@ -54,9 +54,9 @@
         AssessmentSectionComposition Composition { get; }
 
         /// <summary>
-        /// Gets or sets the reference line defining the geometry of the assessment section.
+        /// Gets the reference line defining the geometry of the assessment section.
         /// </summary>
-        ReferenceLine ReferenceLine { get; set; }
+        ReferenceLine ReferenceLine { get; }
 
         /// <summary>
         /// Gets or sets the contribution of each failure mechanism available in this assessment section.