Index: Ringtoets/Piping/src/Ringtoets.Piping.Calculation/PipingCalculator.cs
===================================================================
diff -u -rbbca58832f24a62d39dc744c2db663ed696cfac1 -rcd01ebb93138126cff40f436c309ee8b4bc9069e
--- Ringtoets/Piping/src/Ringtoets.Piping.Calculation/PipingCalculator.cs	(.../PipingCalculator.cs)	(revision bbca58832f24a62d39dc744c2db663ed696cfac1)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Calculation/PipingCalculator.cs	(.../PipingCalculator.cs)	(revision cd01ebb93138126cff40f436c309ee8b4bc9069e)
@@ -256,7 +256,7 @@
             calculator.Ich = input.CriticalHeaveGradient;
             calculator.PhiExit = input.PiezometricHeadExit;
             calculator.DTotal = input.ThicknessCoverageLayer;
-            calculator.PhiPolder = input.PiezometricHeadPolder;
+            calculator.PhiPolder = input.PhreaticLevelExit;
             calculator.RExit = input.DampingFactorExit;
             calculator.HExit = input.PhreaticLevelExit;
             return calculator;
@@ -272,7 +272,7 @@
             calculator.PhiExit = input.PiezometricHeadExit;
             calculator.RExit = input.DampingFactorExit;
             calculator.HExit = input.PhreaticLevelExit;
-            calculator.PhiPolder = input.PiezometricHeadPolder;
+            calculator.PhiPolder = input.PhreaticLevelExit;
             return calculator;
         }