Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs
===================================================================
diff -u -r4938 -r4939
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4938)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4939)
@@ -171,7 +171,7 @@
             foreach (SoilLayer2D layer in soilLayers)
             {
 
-                Aquifer aquifer = aquiferList.FirstOrDefault(a => a.StixFileName == soilProfileFileName && a.LayerName == layer.GeometrySurface.Name);
+                Aquifer aquifer = aquiferList.Find(a => a.StixFileName == soilProfileFileName && a.LayerName == layer.GeometrySurface.Name);
                 if (aquifer != null)
                 {
                     layer.IsAquifer = true;