Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r0e6d67805775b5b8a587156ba1d647ad35bb7441 -rd6d1b03ce8dc3c4e6bba565a85ea310f6196adea
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationGroupContextTreeNodeInfoTest.cs	(.../PipingCalculationGroupContextTreeNodeInfoTest.cs)	(revision 0e6d67805775b5b8a587156ba1d647ad35bb7441)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationGroupContextTreeNodeInfoTest.cs	(.../PipingCalculationGroupContextTreeNodeInfoTest.cs)	(revision d6d1b03ce8dc3c4e6bba565a85ea310f6196adea)
@@ -1349,13 +1349,12 @@
                 new Point3D(0.0, -5.0, 0.0)
             });
 
-            var failureMechanism = new PipingFailureMechanism
+            var failureMechanism = new PipingFailureMechanism();
+            const string arbitraryFilePath = "path";
+            failureMechanism.SurfaceLines.AddRange(new[]
             {
-                SurfaceLines =
-                {
-                    surfaceLine
-                }
-            };
+                surfaceLine
+            }, arbitraryFilePath);
             failureMechanism.StochasticSoilModels.AddRange(new[]
             {
                 new TestStochasticSoilModel
@@ -1365,7 +1364,7 @@
                         new Point2D(0.0, 0.0), new Point2D(5.0, 0.0)
                     }
                 }
-            }, "path");
+            }, arbitraryFilePath);
 
             failureMechanism.AddSection(new FailureMechanismSection("Section", new List<Point2D>
             {