Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSectionResultEntityReadExtensions.cs
===================================================================
diff -u -rc0e8cafbdda9c9f6384005f573d885c0537e0b39 -re5cba69dfe6b2722f689752dc905f3372eb62472
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSectionResultEntityReadExtensions.cs	(.../PipingSectionResultEntityReadExtensions.cs)	(revision c0e8cafbdda9c9f6384005f573d885c0537e0b39)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSectionResultEntityReadExtensions.cs	(.../PipingSectionResultEntityReadExtensions.cs)	(revision e5cba69dfe6b2722f689752dc905f3372eb62472)
@@ -39,9 +39,14 @@
         /// <param name="entity">The <see cref="PipingSectionResultEntity"/> to update 
         /// the <paramref name="sectionResult"/>.</param>
         /// <param name="sectionResult">The target of the read operation.</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="sectionResult"/> is <c>null</c>.</exception>
+        /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
         internal static void Read(this PipingSectionResultEntity entity, PipingFailureMechanismSectionResult sectionResult)
         {
+            if (entity == null)
+            {
+                throw new ArgumentNullException(nameof(entity));
+            }
+
             if (sectionResult == null)
             {
                 throw new ArgumentNullException(nameof(sectionResult));
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/ClosingStructures/ClosingStructuresSectionResultEntityReadExtensionsTest.cs
===================================================================
diff -u -r4823d81e68837eec1ebb52616ae21982462fe6ab -re5cba69dfe6b2722f689752dc905f3372eb62472
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/ClosingStructures/ClosingStructuresSectionResultEntityReadExtensionsTest.cs	(.../ClosingStructuresSectionResultEntityReadExtensionsTest.cs)	(revision 4823d81e68837eec1ebb52616ae21982462fe6ab)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/ClosingStructures/ClosingStructuresSectionResultEntityReadExtensionsTest.cs	(.../ClosingStructuresSectionResultEntityReadExtensionsTest.cs)	(revision e5cba69dfe6b2722f689752dc905f3372eb62472)
@@ -49,7 +49,7 @@
         }
 
         [Test]
-        public void Read_SectionResultIsNull_ThrowArgumentNullException()
+        public void Read_SectionResultNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new ClosingStructuresSectionResultEntity();
@@ -63,7 +63,7 @@
         }
 
         [Test]
-        public void Read_CollectorIsNull_ThrowArgumentNullException()
+        public void Read_CollectorNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new ClosingStructuresSectionResultEntity();
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/GrassCoverErosionInwards/GrassCoverErosionInwardsSectionResultEntityReadExtensionsTest.cs
===================================================================
diff -u -r58d429ac22e6e6cb36de3b1d3b18c63500675049 -re5cba69dfe6b2722f689752dc905f3372eb62472
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/GrassCoverErosionInwards/GrassCoverErosionInwardsSectionResultEntityReadExtensionsTest.cs	(.../GrassCoverErosionInwardsSectionResultEntityReadExtensionsTest.cs)	(revision 58d429ac22e6e6cb36de3b1d3b18c63500675049)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/GrassCoverErosionInwards/GrassCoverErosionInwardsSectionResultEntityReadExtensionsTest.cs	(.../GrassCoverErosionInwardsSectionResultEntityReadExtensionsTest.cs)	(revision e5cba69dfe6b2722f689752dc905f3372eb62472)
@@ -48,7 +48,7 @@
         }
 
         [Test]
-        public void Read_SectionResultIsNull_ThrowArgumentNullException()
+        public void Read_SectionResultNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new GrassCoverErosionInwardsSectionResultEntity();
@@ -62,7 +62,7 @@
         }
 
         [Test]
-        public void Read_CollectorIsNull_ThrowArgumentNullException()
+        public void Read_CollectorNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new GrassCoverErosionInwardsSectionResultEntity();
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/HeightStructures/HeightStructuresSectionResultEntityReadExtensionsTest.cs
===================================================================
diff -u -rec07f12a0ae3eebbdc56101ce6e5b0755672c5b8 -re5cba69dfe6b2722f689752dc905f3372eb62472
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/HeightStructures/HeightStructuresSectionResultEntityReadExtensionsTest.cs	(.../HeightStructuresSectionResultEntityReadExtensionsTest.cs)	(revision ec07f12a0ae3eebbdc56101ce6e5b0755672c5b8)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/HeightStructures/HeightStructuresSectionResultEntityReadExtensionsTest.cs	(.../HeightStructuresSectionResultEntityReadExtensionsTest.cs)	(revision e5cba69dfe6b2722f689752dc905f3372eb62472)
@@ -49,7 +49,7 @@
         }
 
         [Test]
-        public void Read_SectionResultIsNull_ThrowArgumentNullException()
+        public void Read_SectionResultNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new HeightStructuresSectionResultEntity();
@@ -63,7 +63,7 @@
         }
 
         [Test]
-        public void Read_CollectorIsNull_ThrowArgumentNullException()
+        public void Read_CollectorNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new HeightStructuresSectionResultEntity();
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsSectionResultEntityReadExtensionsTest.cs
===================================================================
diff -u -rc0e8cafbdda9c9f6384005f573d885c0537e0b39 -re5cba69dfe6b2722f689752dc905f3372eb62472
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsSectionResultEntityReadExtensionsTest.cs	(.../MacroStabilityInwardsSectionResultEntityReadExtensionsTest.cs)	(revision c0e8cafbdda9c9f6384005f573d885c0537e0b39)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsSectionResultEntityReadExtensionsTest.cs	(.../MacroStabilityInwardsSectionResultEntityReadExtensionsTest.cs)	(revision e5cba69dfe6b2722f689752dc905f3372eb62472)
@@ -48,7 +48,7 @@
         }
 
         [Test]
-        public void Read_SectionResultIsNull_ThrowArgumentNullException()
+        public void Read_SectionResultNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new MacroStabilityInwardsSectionResultEntity();
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/Piping/PipingSectionResultEntityReadExtensionsTest.cs
===================================================================
diff -u -rc0e8cafbdda9c9f6384005f573d885c0537e0b39 -re5cba69dfe6b2722f689752dc905f3372eb62472
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/Piping/PipingSectionResultEntityReadExtensionsTest.cs	(.../PipingSectionResultEntityReadExtensionsTest.cs)	(revision c0e8cafbdda9c9f6384005f573d885c0537e0b39)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/Piping/PipingSectionResultEntityReadExtensionsTest.cs	(.../PipingSectionResultEntityReadExtensionsTest.cs)	(revision e5cba69dfe6b2722f689752dc905f3372eb62472)
@@ -34,8 +34,20 @@
     public class PipingSectionResultEntityReadExtensionsTest
     {
         [Test]
-        public void Read_SectionResultIsNull_ThrowArgumentNullException()
+        public void Read_EntityNull_ThrowsArgumentNullException()
         {
+            // Call
+            TestDelegate call = () => ((PipingSectionResultEntity) null).Read(
+                new PipingFailureMechanismSectionResult(new TestFailureMechanismSection()));
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("entity", exception.ParamName);
+        }
+
+        [Test]
+        public void Read_SectionResultNull_ThrowsArgumentNullException()
+        {
             // Setup
             var entity = new PipingSectionResultEntity();
 
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/StabilityPointStructures/StabilityPointStructuresSectionResultEntityReadExtensionsTest.cs
===================================================================
diff -u -ra72851067e1c8bfd2022b9bbeb805fc147a0ada9 -re5cba69dfe6b2722f689752dc905f3372eb62472
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/StabilityPointStructures/StabilityPointStructuresSectionResultEntityReadExtensionsTest.cs	(.../StabilityPointStructuresSectionResultEntityReadExtensionsTest.cs)	(revision a72851067e1c8bfd2022b9bbeb805fc147a0ada9)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/StabilityPointStructures/StabilityPointStructuresSectionResultEntityReadExtensionsTest.cs	(.../StabilityPointStructuresSectionResultEntityReadExtensionsTest.cs)	(revision e5cba69dfe6b2722f689752dc905f3372eb62472)
@@ -49,7 +49,7 @@
         }
 
         [Test]
-        public void Read_SectionResultIsNull_ThrowArgumentNullException()
+        public void Read_SectionResultNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new StabilityPointStructuresSectionResultEntity();
@@ -63,7 +63,7 @@
         }
 
         [Test]
-        public void Read_CollectorIsNull_ThrowArgumentNullException()
+        public void Read_CollectorNull_ThrowsArgumentNullException()
         {
             // Setup
             var entity = new StabilityPointStructuresSectionResultEntity();