Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.IO.Test/HydraulicBoundaryLocationsWriterTest.cs
===================================================================
diff -u -r3865311e0dac61da3aa9ca1b4645c16b90290f1e -ra0eac32f05f503713d027f116b0194040418ceb2
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.IO.Test/HydraulicBoundaryLocationsWriterTest.cs	(.../HydraulicBoundaryLocationsWriterTest.cs)	(revision 3865311e0dac61da3aa9ca1b4645c16b90290f1e)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.IO.Test/HydraulicBoundaryLocationsWriterTest.cs	(.../HydraulicBoundaryLocationsWriterTest.cs)	(revision a0eac32f05f503713d027f116b0194040418ceb2)
@@ -64,15 +64,10 @@
         public void WriteHydraulicBoundaryLocations_FilePathNull_ThrowArgumentNullException()
         {
             // Setup
-            var hydraulicBoundaryLocation = new HydraulicBoundaryLocation(123, "aName", 1.1, 2.2);
-
             var writer = new HydraulicBoundaryLocationsWriter("aName");
 
             // Call
-            TestDelegate call = () => writer.WriteHydraulicBoundaryLocations(new[]
-            {
-                hydraulicBoundaryLocation
-            }, null);
+            TestDelegate call = () => writer.WriteHydraulicBoundaryLocations(Enumerable.Empty<IHydraulicBoundaryLocation>(), null);
 
             // Assert
             Assert.Throws<ArgumentNullException>(call);