Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs
===================================================================
diff -u -r4605 -r4613
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs	(.../Soil.cs)	(revision 4605)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs	(.../Soil.cs)	(revision 4613)
@@ -31,7 +31,7 @@
 [Serializable]
 public class Soil : IName
 {
-    // Stability properties
+    // Soil properties
     private string name = "";
 
     /// <summary>
@@ -65,7 +65,7 @@
     }
 
     /// <summary>
-    /// Assigns the specified a soil.
+    /// Assigns the properties of aSoil to this Soil.
     /// </summary>
     /// <param name="aSoil">a soil.</param>
     public void Assign(Soil aSoil)
@@ -256,7 +256,7 @@
     /// <value>
     ///   <c>true</c> if default shear strength model must be used; otherwise, <c>false</c>.
     /// </value>
-    public bool? UseDefaultShearStrengthModel { get; set; } = null;
+    public bool? UseDefaultShearStrengthModel { get; set; }
 
     /// <summary>
     /// Gets or sets the slope of the rest profile.