Index: Ringtoets/Piping/test/Ringtoets.Piping.KernelWrapper.TestUtil/TestPipingInput.cs
===================================================================
diff -u -r889b68c331c4545ddd9a6875d48cafd86f656494 -r99f3b343f5ac4aed453d9f6d291217de76ef5314
--- Ringtoets/Piping/test/Ringtoets.Piping.KernelWrapper.TestUtil/TestPipingInput.cs	(.../TestPipingInput.cs)	(revision 889b68c331c4545ddd9a6875d48cafd86f656494)
+++ Ringtoets/Piping/test/Ringtoets.Piping.KernelWrapper.TestUtil/TestPipingInput.cs	(.../TestPipingInput.cs)	(revision 99f3b343f5ac4aed453d9f6d291217de76ef5314)
@@ -125,7 +125,7 @@
 
         private PipingSoilProfile CreateValidSoilProfile()
         {
-            return new PipingSoilProfile(String.Empty, -2, new[]
+            return new PipingSoilProfile(string.Empty, -2, new[]
             {
                 new PipingSoilLayer(9),
                 new PipingSoilLayer(4)