Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingProbabilityAssessmentInputTest.cs
===================================================================
diff -u -r81fa8a9bf3bd503cbd280e88b8f6037a840cff12 -r7111575120feef926652228c88b963ae1c18287e
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingProbabilityAssessmentInputTest.cs	(.../PipingProbabilityAssessmentInputTest.cs)	(revision 81fa8a9bf3bd503cbd280e88b8f6037a840cff12)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingProbabilityAssessmentInputTest.cs	(.../PipingProbabilityAssessmentInputTest.cs)	(revision 7111575120feef926652228c88b963ae1c18287e)
@@ -21,6 +21,7 @@
 
 using System;
 using NUnit.Framework;
+using Ringtoets.Common.Data.Probability;
 
 namespace Ringtoets.Piping.Data.Test
 {
@@ -34,6 +35,7 @@
             var pipingProbabilityAssessmentInput = new PipingProbabilityAssessmentInput();
 
             // Assert
+            Assert.IsInstanceOf<IProbabilityAssessmentInput>(pipingProbabilityAssessmentInput);
             Assert.AreEqual(0.4, pipingProbabilityAssessmentInput.A);
             Assert.AreEqual(300, pipingProbabilityAssessmentInput.B);