Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationCreateExtensionsTest.cs
===================================================================
diff -u -r37aadd6a7b1a13ef1c8809b3479df0911c6632bb -rc312034c7478db99d3c2ef96b1c351df806e8d21
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationCreateExtensionsTest.cs	(.../GrassCoverErosionInwardsCalculationCreateExtensionsTest.cs)	(revision 37aadd6a7b1a13ef1c8809b3479df0911c6632bb)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationCreateExtensionsTest.cs	(.../GrassCoverErosionInwardsCalculationCreateExtensionsTest.cs)	(revision c312034c7478db99d3c2ef96b1c351df806e8d21)
@@ -114,6 +114,33 @@
         }
 
         [Test]
+        public void Create_StringPropertiesDoNotShareReference()
+        {
+            // Setup
+            const string name = "A";
+            const string comment = "B";
+            var calculation = new GrassCoverErosionInwardsCalculation
+            {
+                Name = name,
+                Comments = comment
+            };
+
+            var registry = new PersistenceRegistry();
+
+            // Call
+            GrassCoverErosionInwardsCalculationEntity entity = calculation.Create(registry, 0);
+
+            // Assert
+            Assert.AreNotSame(name, entity.Name,
+                "To create stable binary representations/fingerprints, it's really important that strings are not shared.");
+            Assert.AreEqual(name, entity.Name);
+
+            Assert.AreNotSame(comment, entity.Comments,
+                "To create stable binary representations/fingerprints, it's really important that strings are not shared.");
+            Assert.AreEqual(comment, entity.Comments);
+        }
+
+        [Test]
         public void Create_NaNParameters_EntityWithNullFields()
         {
             // Setup