Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DesignVariable.cs
===================================================================
diff -u -r1e4d77c17c6eac78bfd705efdff9e52b4fca2c7e -r165068d9499f2282a744a79877d0af4461106d9d
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DesignVariable.cs	(.../DesignVariable.cs)	(revision 1e4d77c17c6eac78bfd705efdff9e52b4fca2c7e)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DesignVariable.cs	(.../DesignVariable.cs)	(revision 165068d9499f2282a744a79877d0af4461106d9d)
@@ -97,7 +97,7 @@
         /// <param name="expectedValue">The expected value.</param>
         /// <param name="standardDeviation">The standard deviation.</param>
         /// <returns>The design value</returns>
-        protected RoundedDouble DetermineDesignValue(RoundedDouble expectedValue, RoundedDouble standardDeviation)
+        protected double DetermineDesignValue(double expectedValue, double standardDeviation)
         {
             // Design factor is determined using the 'probit function', which is the inverse
             // CDF function of the standard normal distribution. For more information see: