Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/WaveConditionsCalculationParser.cs
===================================================================
diff -u -r2973c5f790a5131e427bd5f73e2a620044199639 -r1b0460d5f81926d0366ab10e4b0e9f6d75809c71
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/WaveConditionsCalculationParser.cs	(.../WaveConditionsCalculationParser.cs)	(revision 2973c5f790a5131e427bd5f73e2a620044199639)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/WaveConditionsCalculationParser.cs	(.../WaveConditionsCalculationParser.cs)	(revision 1b0460d5f81926d0366ab10e4b0e9f6d75809c71)
@@ -35,7 +35,7 @@
         private const string waveHeightText = "Wave height";
         private const string wavePeakPeriodText = "Wave period";
         private const string reductionFactorText = "reduction factor";
-
+        
         private const char equalsCharacter = '=';
 
         private double? waveAngle;
@@ -58,7 +58,7 @@
             }
             catch
             {
-                // ignored
+                throw new HydraRingFileParserException();
             }
         }