Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PresentationObjects/ReferenceLineContext.cs
===================================================================
diff -u -r2a81f01756e227d5ce93717b21b87e8a5cd5fcbb -rb74a533c2366dfae97097acbdcf9938c8a592aa4
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PresentationObjects/ReferenceLineContext.cs	(.../ReferenceLineContext.cs)	(revision 2a81f01756e227d5ce93717b21b87e8a5cd5fcbb)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PresentationObjects/ReferenceLineContext.cs	(.../ReferenceLineContext.cs)	(revision b74a533c2366dfae97097acbdcf9938c8a592aa4)
@@ -28,14 +28,29 @@
     /// <summary>
     /// Presentation object for <see cref="ReferenceLine"/> instances.
     /// </summary>
-    public class ReferenceLineContext : ObservableWrappedObjectContextBase<IAssessmentSection>
+    public class ReferenceLineContext : ObservableWrappedObjectContextBase<ReferenceLine>
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="ReferenceLineContext"/> class.
         /// </summary>
-        /// <param name="wrappedAssessmentSection">The assessment section that is wrapped.</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="wrappedAssessmentSection"/> is <c>null</c>.</exception>
-        public ReferenceLineContext(IAssessmentSection wrappedAssessmentSection)
-            : base(wrappedAssessmentSection) {}
+        /// <param name="referenceLine">The reference line that is wrapped.</param>
+        /// <param name="assessmentSection">The assessment section that the <see cref="ReferenceLine"/>
+        /// belongs to.</param>
+        /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
+        public ReferenceLineContext(ReferenceLine referenceLine, IAssessmentSection assessmentSection)
+            : base(referenceLine)
+        {
+            if (assessmentSection == null)
+            {
+                throw new ArgumentNullException(nameof(assessmentSection));
+            }
+
+            AssessmentSection = assessmentSection;
+        }
+
+        /// <summary>
+        /// Gets the assessment section.
+        /// </summary>
+        public IAssessmentSection AssessmentSection { get; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/ReferenceLineContextTest.cs
===================================================================
diff -u -r2d7781915c424dbd7887718775d4eb6e42a96503 -rb74a533c2366dfae97097acbdcf9938c8a592aa4
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/ReferenceLineContextTest.cs	(.../ReferenceLineContextTest.cs)	(revision 2d7781915c424dbd7887718775d4eb6e42a96503)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PresentationObjects/ReferenceLineContextTest.cs	(.../ReferenceLineContextTest.cs)	(revision b74a533c2366dfae97097acbdcf9938c8a592aa4)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Core.Common.Controls.PresentationObjects;
 using NUnit.Framework;
 using Rhino.Mocks;
@@ -31,20 +32,33 @@
     public class ReferenceLineContextTest
     {
         [Test]
+        public void Constructor_AssessmentSectionNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate call = () => new ReferenceLineContext(new ReferenceLine(), null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("assessmentSection", exception.ParamName);
+        }
+
+        [Test]
         public void Constructor_ExpectedValues()
         {
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
-            assessmentSection.Stub(a => a.ReferenceLine).Return(new ReferenceLine());
             mocks.ReplayAll();
 
+            var referenceLine = new ReferenceLine();
+
             // Call
-            var referenceLineContext = new ReferenceLineContext(assessmentSection);
+            var context = new ReferenceLineContext(referenceLine, assessmentSection);
 
             // Assert
-            Assert.IsInstanceOf<ObservableWrappedObjectContextBase<IAssessmentSection>>(referenceLineContext);
-            Assert.AreSame(assessmentSection, referenceLineContext.WrappedData);
+            Assert.IsInstanceOf<ObservableWrappedObjectContextBase<ReferenceLine>>(context);
+            Assert.AreSame(referenceLine, context.WrappedData);
+            Assert.AreSame(assessmentSection, context.AssessmentSection);
             mocks.VerifyAll();
         }
     }