Index: Riskeer/Common/src/Riskeer.Common.Forms/GuiServices/HydraulicBoundaryLocationCalculationGuiService.cs
===================================================================
diff -u -r7f321a7efae09f2bb00034e80af09f722fd7504b -rc893c136f5e138513d603425ecd9536869b437be
--- Riskeer/Common/src/Riskeer.Common.Forms/GuiServices/HydraulicBoundaryLocationCalculationGuiService.cs	(.../HydraulicBoundaryLocationCalculationGuiService.cs)	(revision 7f321a7efae09f2bb00034e80af09f722fd7504b)
+++ Riskeer/Common/src/Riskeer.Common.Forms/GuiServices/HydraulicBoundaryLocationCalculationGuiService.cs	(.../HydraulicBoundaryLocationCalculationGuiService.cs)	(revision c893c136f5e138513d603425ecd9536869b437be)
@@ -70,7 +70,7 @@
                 throw new ArgumentNullException(nameof(calculations));
             }
 
-            RunActivities(assessmentSection.HydraulicBoundaryDatabase, targetProbability,
+            RunActivities(assessmentSection.HydraulicBoundaryDatabase,
                           HydraulicBoundaryLocationCalculationActivityFactory.CreateDesignWaterLevelCalculationActivities(
                               calculations,
                               assessmentSection,
@@ -93,15 +93,15 @@
                 throw new ArgumentNullException(nameof(calculations));
             }
 
-            RunActivities(assessmentSection.HydraulicBoundaryDatabase, targetProbability,
+            RunActivities(assessmentSection.HydraulicBoundaryDatabase,
                           HydraulicBoundaryLocationCalculationActivityFactory.CreateWaveHeightCalculationActivities(
                               calculations,
                               assessmentSection,
                               targetProbability,
                               calculationIdentifier));
         }
 
-        private void RunActivities(HydraulicBoundaryDatabase hydraulicBoundaryDatabase, double targetProbability, IEnumerable<CalculatableActivity> activities)
+        private void RunActivities(HydraulicBoundaryDatabase hydraulicBoundaryDatabase, IEnumerable<CalculatableActivity> activities)
         {
             string validationProblem = HydraulicBoundaryDatabaseHelper.ValidateFilesForCalculation(
                 hydraulicBoundaryDatabase.FilePath,
@@ -111,11 +111,6 @@
 
             if (string.IsNullOrEmpty(validationProblem))
             {
-                TargetProbabilityCalculationServiceHelper.ValidateTargetProbability(targetProbability, logMessage => validationProblem = logMessage);
-            }
-
-            if (string.IsNullOrEmpty(validationProblem))
-            {
                 ActivityProgressDialogRunner.Run(viewParent, activities);
             }
             else