Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanismSectionResult.cs
===================================================================
diff -u -r94b85dc077cddf7535b328b8b3a96a494afac0f6 -re1705d17c577ac884869c00181cac52470cc50f2
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanismSectionResult.cs	(.../PipingFailureMechanismSectionResult.cs)	(revision 94b85dc077cddf7535b328b8b3a96a494afac0f6)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanismSectionResult.cs	(.../PipingFailureMechanismSectionResult.cs)	(revision e1705d17c577ac884869c00181cac52470cc50f2)
@@ -54,7 +54,7 @@
                 var calculationScenarios = CalculationScenarios.Where(cs => cs.IsRelevant && cs.Status == CalculationScenarioStatus.Done).ToList();
 
                 return calculationScenarios.Any()
-                    ? (RoundedDouble) (1.0 / calculationScenarios.Sum(scenario => (1.0 / scenario.Probability.Value) * scenario.Contribution.Value))
+                    ? (RoundedDouble) (1.0 / calculationScenarios.Sum(scenario => (scenario.Probability.Value) * scenario.Contribution.Value))
                     : (RoundedDouble) 0.0;
             }
         }