Index: src/Deltares.DSoilModel.Data/SosSoilLayer1D.cs
===================================================================
diff -u -r867 -r879
--- src/Deltares.DSoilModel.Data/SosSoilLayer1D.cs	(.../SosSoilLayer1D.cs)	(revision 867)
+++ src/Deltares.DSoilModel.Data/SosSoilLayer1D.cs	(.../SosSoilLayer1D.cs)	(revision 879)
@@ -21,6 +21,7 @@
 
 using System.ComponentModel;
 using Deltares.Geotechnics;
+using Deltares.Geotechnics.Soils;
 using Deltares.Standard;
 using Deltares.Standard.Attributes;
 using Deltares.Standard.EventPublisher;