Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryLocationTest.cs
===================================================================
diff -u -rce190360da30edf73fb464cc0fea1d9a795aa5d4 -r7618e47c7ff0d09102d56e2c25545f57a4269352
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryLocationTest.cs	(.../HydraulicBoundaryLocationTest.cs)	(revision ce190360da30edf73fb464cc0fea1d9a795aa5d4)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryLocationTest.cs	(.../HydraulicBoundaryLocationTest.cs)	(revision 7618e47c7ff0d09102d56e2c25545f57a4269352)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 
@@ -51,6 +52,8 @@
             HydraulicBoundaryLocation hydraulicBoundaryLocation = new HydraulicBoundaryLocation(id, name, x, y);
 
             // Assert
+            Assert.IsInstanceOf<Observable>(hydraulicBoundaryLocation);
+
             Assert.AreEqual(id, hydraulicBoundaryLocation.Id);
             Assert.AreEqual(name, hydraulicBoundaryLocation.Name);
             Point2D location = hydraulicBoundaryLocation.Location;