Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/PipingCalculationConfigurationHelper.cs
===================================================================
diff -u -r230b86184fb335b764af770f1c9fb8a1ec76fe3a -rd515de49557312e4af41b1c051c900d39d1f9e2f
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/PipingCalculationConfigurationHelper.cs	(.../PipingCalculationConfigurationHelper.cs)	(revision 230b86184fb335b764af770f1c9fb8a1ec76fe3a)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/PipingCalculationConfigurationHelper.cs	(.../PipingCalculationConfigurationHelper.cs)	(revision d515de49557312e4af41b1c051c900d39d1f9e2f)
@@ -36,7 +36,7 @@
     /// </summary>
     public static class PipingCalculationConfigurationHelper
     {
-        private static ILog log = LogManager.GetLogger(typeof(PipingCalculationConfigurationHelper));
+        private static readonly ILog log = LogManager.GetLogger(typeof(PipingCalculationConfigurationHelper));
 
         /// <summary>
         /// Creates a structure of <see cref="PipingCalculationGroup"/> and <see cref="PipingCalculation"/> based on combination of the