Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/StochasticSoilModel.cs
===================================================================
diff -u -r89d34600d1408c8b1f4240020e841ba64cc26622 -rf4efcc2bb58d597f4a19884d98d0ab79bab04b1c
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/StochasticSoilModel.cs	(.../StochasticSoilModel.cs)	(revision 89d34600d1408c8b1f4240020e841ba64cc26622)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/StochasticSoilModel.cs	(.../StochasticSoilModel.cs)	(revision f4efcc2bb58d597f4a19884d98d0ab79bab04b1c)
@@ -106,7 +106,7 @@
 
             foreach (var fromProfile in fromModel.StochasticSoilProfiles)
             {
-                var sameProfile = StochasticSoilProfiles.SingleOrDefault(sp => sp.SoilProfile.Name.Equals(fromProfile.SoilProfile.Name));
+                StochasticSoilProfile sameProfile = StochasticSoilProfiles.SingleOrDefault(sp => sp.SoilProfile.Name.Equals(fromProfile.SoilProfile.Name));
                 if (sameProfile != null)
                 {
                     sameProfile.Update(fromProfile);
@@ -120,7 +120,7 @@
                 newNames.Add(fromProfile.SoilProfile.Name);
             }
 
-            foreach (var profileToRemove in StochasticSoilProfiles.Where(sp => !newNames.Contains(sp.SoilProfile.Name)).ToList())
+            foreach (StochasticSoilProfile profileToRemove in StochasticSoilProfiles.Where(sp => !newNames.Contains(sp.SoilProfile.Name)).ToArray())
             {
                 StochasticSoilProfiles.Remove(profileToRemove);
                 removedProfiles.Add(profileToRemove);