Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamProject.cs
===================================================================
diff -u -r2937 -r2939
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamProject.cs	(.../DamProject.cs)	(revision 2937)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamProject.cs	(.../DamProject.cs)	(revision 2939)
@@ -429,18 +429,18 @@
                     if (newSoil != null)
                     {
                         soil.Assign(newSoil);
-                    }
-                    // update aquifer dictionary too
-                    if (newSoil != null && soilList.AquiferDictionary.ContainsKey(newSoil))
-                    {
-                        if (dike.SoilList.AquiferDictionary.ContainsKey(soil))
+                        // update aquifer dictionary too
+                        if (soilList.AquiferDictionary.ContainsKey(newSoil))
                         {
-                            dike.SoilList.AquiferDictionary[soil] = soilList.AquiferDictionary[newSoil];
+                            if (dike.SoilList.AquiferDictionary.ContainsKey(soil))
+                            {
+                                dike.SoilList.AquiferDictionary[soil] = soilList.AquiferDictionary[newSoil];
+                            }
+                            else
+                            {
+                                dike.SoilList.AquiferDictionary.Add(soil, soilList.AquiferDictionary[newSoil]);
+                            }
                         }
-                        else
-                        {
-                            dike.SoilList.AquiferDictionary.Add(soil, soilList.AquiferDictionary[newSoil]);
-                        }
                     }
                 }
             }