Index: src/Deltares.DSoilModel.Data/SosSoilLayer1D.cs
===================================================================
diff -u -r6 -r502
--- src/Deltares.DSoilModel.Data/SosSoilLayer1D.cs	(.../SosSoilLayer1D.cs)	(revision 6)
+++ src/Deltares.DSoilModel.Data/SosSoilLayer1D.cs	(.../SosSoilLayer1D.cs)	(revision 502)
@@ -22,7 +22,7 @@
         /// </value>
         [ReadOnly(true)]
         [Format("F3")]
-        [Unit(UnitType.Length)]
+        [Unit(UnitType.Depth)]
         public double? MaximumTopLevel
         {
             get
@@ -45,7 +45,7 @@
         /// </value>
         [ReadOnly(true)]
         [Format("F3")]
-        [Unit(UnitType.Length)]
+        [Unit(UnitType.Depth)]
         public double? MinimumTopLevel
         {
             get