Index: Ringtoets/Piping/test/Ringtoets.Piping.Service.Test/PipingCalculationActivityTest.cs
===================================================================
diff -u -rd6e6eadf4a2521df75b6d371bacbb181a43058a3 -r3fe1e0bdfa0ff0939bbabbc78386ecc7617c96c4
--- Ringtoets/Piping/test/Ringtoets.Piping.Service.Test/PipingCalculationActivityTest.cs	(.../PipingCalculationActivityTest.cs)	(revision d6e6eadf4a2521df75b6d371bacbb181a43058a3)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Service.Test/PipingCalculationActivityTest.cs	(.../PipingCalculationActivityTest.cs)	(revision 3fe1e0bdfa0ff0939bbabbc78386ecc7617c96c4)
@@ -49,8 +49,8 @@
             // Assert
             TestHelper.AssertLogMessages(call, messages =>
             {
-                var msgs = messages.ToList();
-                Assert.AreEqual(4, msgs.Count);
+                var msgs = messages.ToArray();
+                Assert.AreEqual(4, msgs.Length);
                 StringAssert.StartsWith(String.Format("Validatie van '{0}' gestart om: ", invalidPipingCalculation.Name), msgs[0]);
                 StringAssert.StartsWith("Validatie mislukt: ", msgs[1]);
                 StringAssert.StartsWith("Validatie mislukt: ", msgs[2]);
@@ -76,8 +76,8 @@
             // Assert
             TestHelper.AssertLogMessages(call, messages =>
             {
-                var msgs = messages.ToList();
-                Assert.AreEqual(4, msgs.Count);
+                var msgs = messages.ToArray();
+                Assert.AreEqual(4, msgs.Length);
                 StringAssert.StartsWith(String.Format("Validatie van '{0}' gestart om: ", validPipingCalculation.Name), msgs[0]);
                 StringAssert.StartsWith(String.Format("Validatie van '{0}' beëindigd om: ", validPipingCalculation.Name), msgs[1]);
                 StringAssert.StartsWith(String.Format("Berekening van '{0}' gestart om: ", validPipingCalculation.Name), msgs[2]);