Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/StructuresInputBasePropertiesTest.cs
===================================================================
diff -u -r08db9d0ea01aefe9fd1f06e31439b23ec84e482f -rf05ca3345e173bcdd462ca8ea4b6f12b2de86e2c
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/StructuresInputBasePropertiesTest.cs	(.../StructuresInputBasePropertiesTest.cs)	(revision 08db9d0ea01aefe9fd1f06e31439b23ec84e482f)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/StructuresInputBasePropertiesTest.cs	(.../StructuresInputBasePropertiesTest.cs)	(revision f05ca3345e173bcdd462ca8ea4b6f12b2de86e2c)
@@ -178,8 +178,9 @@
             Assert.AreSame(input.HydraulicBoundaryLocation, properties.HydraulicBoundaryLocation);
             Assert.AreSame(input.StormDuration, properties.StormDuration.Data);
 
-            Assert.AreEqual(1, properties.GetAvailableHydraulicBoundaryLocations().Count());
-            CollectionAssert.AreEqual(inputContext.AvailableHydraulicBoundaryLocations, properties.GetAvailableHydraulicBoundaryLocations());
+            var availableHydraulicBoundaryLocations = properties.GetAvailableHydraulicBoundaryLocations().ToArray();
+            Assert.AreEqual(1, availableHydraulicBoundaryLocations.Length);
+            CollectionAssert.AreEqual(inputContext.AvailableHydraulicBoundaryLocations, availableHydraulicBoundaryLocations);
 
             mockRepository.VerifyAll();
         }