Index: Ringtoets/Piping/src/Ringtoets.Piping.Service/PipingCalculationService.cs
===================================================================
diff -u -r6ce0630b9c2fc4df24fee43aaab256193c1ae96a -rbc82d5f6de0a739ad6e76be956aaa1b557c26451
--- Ringtoets/Piping/src/Ringtoets.Piping.Service/PipingCalculationService.cs	(.../PipingCalculationService.cs)	(revision 6ce0630b9c2fc4df24fee43aaab256193c1ae96a)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Service/PipingCalculationService.cs	(.../PipingCalculationService.cs)	(revision bc82d5f6de0a739ad6e76be956aaa1b557c26451)
@@ -179,7 +179,7 @@
 
             if (inputParameters.UseAssessmentLevelManualInput)
             {
-                validationResult.AddRange(new NumericInputRule(inputParameters.AssessmentLevel, ParameterNameExtractor.GetFromDisplayName(RingtoetsCommonFormsResources.AssessmentLevel_DisplayName)).Validate());
+                validationResult.AddRange(new NumericInputRule(inputParameters.AssessmentLevel, ParameterNameExtractor.GetFromDisplayName(RingtoetsCommonFormsResources.WaterLevel_DisplayName)).Validate());
             }
             else
             {