Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs
===================================================================
diff -u -r4830 -r4872
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4830)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4872)
@@ -74,11 +74,10 @@
             SoilProfile2D readSoilProfile = ReadSoilProfile(soilProfileDirectory, profileName);
             foreach (SoilLayer2D surface in readSoilProfile.Surfaces)
             {
-                string missingSoil = IsSoilOfSurfacePresent(availableSoils.Soils, surface.Soil);
-                if (missingSoil != string.Empty)
+                if (!IsSoilOfSurfacePresent(availableSoils.Soils, surface.Soil.Name))
                 {
                     string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorUndefinedMaterials");
-                    throw new SoilProfileImporterException(string.Format(messageFormat, profileName, missingSoil));
+                    throw new SoilProfileImporterException(string.Format(messageFormat, profileName, surface.Soil.Name));
                 }
             }
             TransferSoilLayerProperties(readSoilProfile.Surfaces);
@@ -147,15 +146,10 @@
         return string.Equals(Path.GetExtension(profileName), ".sti", StringComparison.OrdinalIgnoreCase);
     }
 
-    private static string IsSoilOfSurfacePresent(IEnumerable<Soil> availableSoils, Soil soil)
+    private static bool IsSoilOfSurfacePresent(IEnumerable<Soil> availableSoils, string soilName)
     {
-        var missingSoil = string.Empty;
         var soilNames = new HashSet<string>(availableSoils.Select(s => s.Name));
-        if (!soilNames.Contains(soil.Name, StringComparer.OrdinalIgnoreCase))
-        {
-            missingSoil = soil.Name;
-        }
-        return missingSoil;
+        return soilNames.Contains(soilName, StringComparer.OrdinalIgnoreCase);
     }
 
     private static void TransferSoilLayerProperties(IEnumerable<SoilLayer2D> soilLayers)