Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.IO/StabilityPointStructuresImporter.cs
===================================================================
diff -u -r0dd52355d7e8eedc01afd118d8936dca2dc3b7be -r7d6e4c28a40fb056c182d0691dda2b2e88aeebfd
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.IO/StabilityPointStructuresImporter.cs	(.../StabilityPointStructuresImporter.cs)	(revision 0dd52355d7e8eedc01afd118d8936dca2dc3b7be)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.IO/StabilityPointStructuresImporter.cs	(.../StabilityPointStructuresImporter.cs)	(revision 7d6e4c28a40fb056c182d0691dda2b2e88aeebfd)
@@ -217,9 +217,15 @@
         private static StabilityPointStructureInflowModelType GetStabilityPointStructureInflowModelType(StructuresParameterRow structureParameterRow)
         {
             string keywordValue = structureParameterRow.AlphanumericValue.ToLower();
-            return keywordValue == "lagedrempel"
-                       ? StabilityPointStructureInflowModelType.LowSill
-                       : StabilityPointStructureInflowModelType.FloodedCulvert;
+            switch (keywordValue)
+            {
+                case StructureFilesKeywords.InflowModelTypeLowSill:
+                    return StabilityPointStructureInflowModelType.LowSill;
+                case StructureFilesKeywords.InflowModelTypeFloodedCulvert:
+                    return StabilityPointStructureInflowModelType.FloodedCulvert;
+                default:
+                    throw new NotSupportedException();
+            }
         }
     }
 }
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