Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IHydraRingFileParser.cs
===================================================================
diff -u -r594eede1049807722c951d1d0a7f13f4e3af809c -r12fa48e392e145311f2f6fe5822a8692594aaf0f
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IHydraRingFileParser.cs	(.../IHydraRingFileParser.cs)	(revision 594eede1049807722c951d1d0a7f13f4e3af809c)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/IHydraRingFileParser.cs	(.../IHydraRingFileParser.cs)	(revision 12fa48e392e145311f2f6fe5822a8692594aaf0f)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Ringtoets.HydraRing.Calculation.Exceptions;
 
 namespace Ringtoets.HydraRing.Calculation.Parsers
 {