Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilProfileBuilderException.cs
===================================================================
diff -u -rd82fa09fe9ae053ce7702ba89ef23ae029640d1b -rf62076c7d8b6a65856fbab6a1b34b4234aa319e5
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilProfileBuilderException.cs	(.../SoilProfileBuilderException.cs)	(revision d82fa09fe9ae053ce7702ba89ef23ae029640d1b)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilProfileBuilderException.cs	(.../SoilProfileBuilderException.cs)	(revision f62076c7d8b6a65856fbab6a1b34b4234aa319e5)
@@ -27,6 +27,7 @@
     /// <summary>
     /// Exception thrown when something went wrong while building a <see cref="PipingSoilProfile"/>.
     /// </summary>
+    [Serializable]
     public class SoilProfileBuilderException : Exception
     {
         /// <summary>