Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PresentationObjects/HeightStructuresInputContext.cs
===================================================================
diff -u -r516f10118109eb4056794904fa280b9df0c7ca1f -rce31448a066c084f755439f3e7d453bfb042b291
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PresentationObjects/HeightStructuresInputContext.cs	(.../HeightStructuresInputContext.cs)	(revision 516f10118109eb4056794904fa280b9df0c7ca1f)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PresentationObjects/HeightStructuresInputContext.cs	(.../HeightStructuresInputContext.cs)	(revision ce31448a066c084f755439f3e7d453bfb042b291)
@@ -48,7 +48,7 @@
         {
             if (calculation == null)
             {
-                var message = String.Format(Resources.HeightStructuresContext_AssertInputsAreNotNull_DataDescription_0_cannot_be_null,
+                var message = string.Format(Resources.HeightStructuresContext_AssertInputsAreNotNull_DataDescription_0_cannot_be_null,
                                             Resources.HeightStructuresInputContext_DataDescription_HeightStructuresInputCalculationItem);
 
                 throw new ArgumentNullException("calculation", message);