Index: Ringtoets/Common/src/Ringtoets.Common.IO/ReferenceLineReader.cs
===================================================================
diff -u -r04b631b486b742c5339deb1d5504bb13ab5e248d -r7a239dafc3209ea3c12b7c25d94ea6aec2918628
--- Ringtoets/Common/src/Ringtoets.Common.IO/ReferenceLineReader.cs	(.../ReferenceLineReader.cs)	(revision 04b631b486b742c5339deb1d5504bb13ab5e248d)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/ReferenceLineReader.cs	(.../ReferenceLineReader.cs)	(revision 7a239dafc3209ea3c12b7c25d94ea6aec2918628)
@@ -116,16 +116,7 @@
                 throw new CriticalFileReadException(message);
             }
 
-            try
-            {
-                return (MapLineData) lineShapeReader.ReadLine(RingtoetsCommonDataResources.ReferenceLine_DisplayName);
-            }
-            catch (InvalidCastException exception)
-            {
-                string message = new FileReaderErrorMessageBuilder(shapeFilePath)
-                    .Build(RingtoetsCommonIOResources.ReferenceLineReader_File_must_contain_1_polyline);
-                throw new CriticalFileReadException(message, exception);
-            }
+            return (MapLineData) lineShapeReader.ReadLine(RingtoetsCommonDataResources.ReferenceLine_DisplayName);
         }
 
         private static ReferenceLine CreateReferenceLine(MapLineData lineMapData, string shapeFilePath)