Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/StochasticSoilProfile.cs
===================================================================
diff -u -r8832cfacbfb0a999d9dd5ddcb93fd81bdb2fb09f -r8c1d631e78831a7fa357c4b285e89942d532bebb
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/StochasticSoilProfile.cs	(.../StochasticSoilProfile.cs)	(revision 8832cfacbfb0a999d9dd5ddcb93fd81bdb2fb09f)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/StochasticSoilProfile.cs	(.../StochasticSoilProfile.cs)	(revision 8c1d631e78831a7fa357c4b285e89942d532bebb)
@@ -63,7 +63,7 @@
 
         public override string ToString()
         {
-            return SoilProfile == null ? "" : SoilProfile.ToString();
+            return SoilProfile == null ? string.Empty : SoilProfile.ToString();
         }
     }
 }
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