Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/DikeProfiles/DikeProfileTest.cs
===================================================================
diff -u -r9ca2ce99f8b1d93fb1edde4e505b5acc5094a256 -r1b1fb73a7519560cd8d2f53e7a7471be26d34ba7
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/DikeProfiles/DikeProfileTest.cs	(.../DikeProfileTest.cs)	(revision 9ca2ce99f8b1d93fb1edde4e505b5acc5094a256)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/DikeProfiles/DikeProfileTest.cs	(.../DikeProfileTest.cs)	(revision 1b1fb73a7519560cd8d2f53e7a7471be26d34ba7)
@@ -782,15 +782,9 @@
             // Assert
             TestHelper.AssertAreEqualButNotSame(expectedWorldReferencePoint, dikeProfileToUpdate.WorldReferencePoint);
             CollectionAssert.AreEqual(expectedForeshoreGeometry, dikeProfileToUpdate.ForeshoreGeometry);
-            for (var i = 0; i < expectedForeshoreGeometry.Length; i++)
-            {
-                Assert.AreNotSame(expectedForeshoreGeometry[i], dikeProfileToUpdate.ForeshoreGeometry.ElementAt(i));
-            }
+            TestHelper.AssertCollectionAreNotSame(expectedForeshoreGeometry, dikeProfileToUpdate.ForeshoreGeometry);
             CollectionAssert.AreEqual(expectedDikeGeometry, dikeProfileToUpdate.DikeGeometry);
-            for (var i = 0; i < expectedDikeGeometry.Length; i++)
-            {
-                Assert.AreNotSame(expectedDikeGeometry[i], dikeProfileToUpdate.DikeGeometry.ElementAt(i));
-            }
+            TestHelper.AssertCollectionAreNotSame(expectedDikeGeometry, dikeProfileToUpdate.DikeGeometry);
             TestHelper.AssertAreEqualButNotSame(expectedBreakWater, dikeProfileToUpdate.BreakWater);
 
             Assert.AreEqual(expectedId, dikeProfileToUpdate.Id);