Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/ClosingStructuresImporter.cs
===================================================================
diff -u -rd75706d5c26b844e76d93f6c1879d3acbf98cf77 -r0dd52355d7e8eedc01afd118d8936dca2dc3b7be
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/ClosingStructuresImporter.cs	(.../ClosingStructuresImporter.cs)	(revision d75706d5c26b844e76d93f6c1879d3acbf98cf77)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/ClosingStructuresImporter.cs	(.../ClosingStructuresImporter.cs)	(revision 0dd52355d7e8eedc01afd118d8936dca2dc3b7be)
@@ -102,7 +102,7 @@
 
         private ClosingStructure CreateClosingStructure(StructureLocation structureLocation, List<StructuresParameterRow> structureParameterRows)
         {
-            Dictionary<string, StructuresParameterRow> rowData = structureParameterRows.ToDictionary(row => row.ParameterId, row => row);
+            Dictionary<string, StructuresParameterRow> rowData = structureParameterRows.ToDictionary(row => row.ParameterId, row => row, StringComparer.OrdinalIgnoreCase);
 
             string structureName = structureLocation.Name;
             return new ClosingStructure(