Index: Ringtoets/Piping/test/Ringtoets.Piping.Service.Test/PipingInputServiceTest.cs
===================================================================
diff -u -r57bc6a475f6cdd57b1a0ebf70cdf533014afd1ff -r6b60edb4d7f04f83c74089d70a72c4f79ed413dd
--- Ringtoets/Piping/test/Ringtoets.Piping.Service.Test/PipingInputServiceTest.cs	(.../PipingInputServiceTest.cs)	(revision 57bc6a475f6cdd57b1a0ebf70cdf533014afd1ff)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Service.Test/PipingInputServiceTest.cs	(.../PipingInputServiceTest.cs)	(revision 6b60edb4d7f04f83c74089d70a72c4f79ed413dd)
@@ -117,12 +117,12 @@
         public void SyncStochasticSoilProfileWithStochasticSoilModel_MultipleStochasticSoilProfilesInStochasticSoilModel_DoesNotSetStochasticSoilProfile()
         {
             // Setup
-            PipingStochasticSoilModel soilModel = PipingStochasticSoilModelTestFactory.CreatePipingStochasticSoilModel();
-            soilModel.StochasticSoilProfiles.AddRange(new[]
+            PipingStochasticSoilModel soilModel = PipingStochasticSoilModelTestFactory.CreatePipingStochasticSoilModel(new[]
             {
                 new PipingStochasticSoilProfile(0.0, PipingSoilProfileTestFactory.CreatePipingSoilProfile()),
                 new PipingStochasticSoilProfile(1.0, PipingSoilProfileTestFactory.CreatePipingSoilProfile())
             });
+
             var pipingInput = new PipingInput(new GeneralPipingInput())
             {
                 StochasticSoilModel = soilModel
@@ -140,10 +140,11 @@
         {
             // Setup
             var soilProfile = new PipingStochasticSoilProfile(0.3, PipingSoilProfileTestFactory.CreatePipingSoilProfile());
+            PipingStochasticSoilModel soilModel = PipingStochasticSoilModelTestFactory.CreatePipingStochasticSoilModel(new[]
+            {
+                soilProfile
+            });
 
-            PipingStochasticSoilModel soilModel = PipingStochasticSoilModelTestFactory.CreatePipingStochasticSoilModel();
-            soilModel.StochasticSoilProfiles.Add(soilProfile);
-
             var pipingInput = new PipingInput(new GeneralPipingInput())
             {
                 StochasticSoilModel = soilModel,