Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsPreconsolidationStress.cs
===================================================================
diff -u -r31f59cfc48a6839453e372572d03ecc6ae6f0d00 -r3946a0010baf30b501d9052a692b7ab541b83207
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsPreconsolidationStress.cs	(.../MacroStabilityInwardsPreconsolidationStress.cs)	(revision 31f59cfc48a6839453e372572d03ecc6ae6f0d00)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsPreconsolidationStress.cs	(.../MacroStabilityInwardsPreconsolidationStress.cs)	(revision 3946a0010baf30b501d9052a692b7ab541b83207)
@@ -37,9 +37,19 @@
         /// </summary>
         /// <param name="location">The location of the preconsolidation stress.</param>
         /// <param name="stressDistribution">The stress distribution belonging to the preconsolidation stress.</param>
+        /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
         /// <exception cref="ArgumentException">Thrown when any of the parameters are <see cref="double.NaN"/>.</exception>
         public MacroStabilityInwardsPreconsolidationStress(Point2D location, VariationCoefficientLogNormalDistribution stressDistribution)
         {
+            if (location == null)
+            {
+                throw new ArgumentNullException(nameof(location));
+            }
+            if (stressDistribution == null)
+            {
+                throw new ArgumentNullException(nameof(stressDistribution));
+            }
+
             ValidateParameterNaN(location.X, Resources.MacroStabilityInwardsPreconsolidationStress_XCoordinate_ParameterName);
             ValidateParameterNaN(location.Y, Resources.MacroStabilityInwardsPreconsolidationStress_ZCoordinate_ParameterName);
             ValidateParameterNaN(stressDistribution.Mean, Resources.MacroStabilityInwardsPreconsolidationStress_PreconsolidationStressMean_ParameterName);
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/MacroStabilityInwardsSemiProbabilisticDesignVariableFactoryTest.cs
===================================================================
diff -u -r31f59cfc48a6839453e372572d03ecc6ae6f0d00 -r3946a0010baf30b501d9052a692b7ab541b83207
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/MacroStabilityInwardsSemiProbabilisticDesignVariableFactoryTest.cs	(.../MacroStabilityInwardsSemiProbabilisticDesignVariableFactoryTest.cs)	(revision 31f59cfc48a6839453e372572d03ecc6ae6f0d00)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/MacroStabilityInwardsSemiProbabilisticDesignVariableFactoryTest.cs	(.../MacroStabilityInwardsSemiProbabilisticDesignVariableFactoryTest.cs)	(revision 3946a0010baf30b501d9052a692b7ab541b83207)
@@ -201,7 +201,7 @@
             var stressDistribution = new VariationCoefficientLogNormalDistribution
             {
                 Mean = (RoundedDouble) 0.005,
-                CoefficientOfVariation = (RoundedDouble) random.NextDouble()
+                CoefficientOfVariation = (RoundedDouble) coefficientOfVariation
             };
 
             var preconsolidationStress = new MacroStabilityInwardsPreconsolidationStress(location, stressDistribution);
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/SoilProfile/MacroStabilityInwardsPreconsolidationStressTest.cs
===================================================================
diff -u -r31f59cfc48a6839453e372572d03ecc6ae6f0d00 -r3946a0010baf30b501d9052a692b7ab541b83207
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/SoilProfile/MacroStabilityInwardsPreconsolidationStressTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTest.cs)	(revision 31f59cfc48a6839453e372572d03ecc6ae6f0d00)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/SoilProfile/MacroStabilityInwardsPreconsolidationStressTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTest.cs)	(revision 3946a0010baf30b501d9052a692b7ab541b83207)
@@ -35,6 +35,42 @@
     public class MacroStabilityInwardsPreconsolidationStressTest
     {
         [Test]
+        public void Constructor_LocationNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var random = new Random(21);
+
+            var distribution = new VariationCoefficientLogNormalDistribution
+            {
+                Mean = (RoundedDouble)0.005,
+                CoefficientOfVariation = random.NextRoundedDouble()
+            };
+            
+            // Call
+            TestDelegate call = () => new MacroStabilityInwardsPreconsolidationStress(null, distribution);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("location", exception.ParamName);
+        }
+
+        [Test]
+        public void Constructor_StressDistributionNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var random = new Random(21);
+
+            var location = new Point2D(random.NextDouble(), random.NextDouble());
+
+            // Call
+            TestDelegate call = () => new MacroStabilityInwardsPreconsolidationStress(location, null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("stressDistribution", exception.ParamName);
+        }
+
+        [Test]
         public void Constructor_ValidArguments_ReturnsExpectedValues()
         {
             // Setup