Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/DikeProfiles/DikeProfileTest.cs
===================================================================
diff -u -ra979e6ebe32c21456dd9139b3fb07f4a499351c1 -rec27d9f02dc27c2829ed45788fae7d5923d63d3d
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/DikeProfiles/DikeProfileTest.cs	(.../DikeProfileTest.cs)	(revision a979e6ebe32c21456dd9139b3fb07f4a499351c1)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/DikeProfiles/DikeProfileTest.cs	(.../DikeProfileTest.cs)	(revision ec27d9f02dc27c2829ed45788fae7d5923d63d3d)
@@ -354,7 +354,7 @@
         }
 
         [Test]
-        public void Equal_ToDifferentType_ReturnsFalse()
+        public void Equals_ToDifferentType_ReturnsFalse()
         {
             // Setup
             DikeProfile dikeProfile = CreateFullyDefinedDikeProfile();
@@ -369,6 +369,20 @@
         }
 
         [Test]
+        public void Equals_DerivedClassWithEqualProperties_ReturnsTrue()
+        {
+            // Setup
+            DikeProfile profile = CreateFullyDefinedDikeProfile();
+            var derivedLayer = new TestDikeProfile(profile);
+
+            // Call
+            bool areEqual = profile.Equals(derivedLayer);
+
+            // Assert
+            Assert.IsTrue(areEqual);
+        }
+
+        [Test]
         public void Equals_DifferentWorldReferencePoints_ReturnsFalse()
         {
             // Setup
@@ -842,5 +856,20 @@
 
             return new DikeProfile(worldCoordinate, dikeGeometry, foreshoreGeometry, breakWater, properties);
         }
+
+        private class TestDikeProfile : DikeProfile
+        {
+            public TestDikeProfile(DikeProfile profile)
+                : base(profile.WorldReferencePoint, profile.DikeGeometry, profile.ForeshoreGeometry, profile.BreakWater,
+                       new ConstructionProperties
+                       {
+                           Name = profile.Name,
+                           DikeHeight = profile.DikeHeight,
+                           Id = profile.Id,
+                           Orientation = profile.Orientation,
+                           X0 = profile.X0
+                       })
+            { }
+        }
     }
 }
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