Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/Ringtoets.Piping.Data.csproj
===================================================================
diff -u -r1e4d77c17c6eac78bfd705efdff9e52b4fca2c7e -r314545f25db70366badcc527aeca68d241bfdcdc
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/Ringtoets.Piping.Data.csproj	(.../Ringtoets.Piping.Data.csproj)	(revision 1e4d77c17c6eac78bfd705efdff9e52b4fca2c7e)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/Ringtoets.Piping.Data.csproj	(.../Ringtoets.Piping.Data.csproj)	(revision 314545f25db70366badcc527aeca68d241bfdcdc)
@@ -51,7 +51,6 @@
     </Compile>
     <Compile Include="DerivedPipingInput.cs" />
     <Compile Include="GeneralPipingInput.cs" />
-    <Compile Include="IPipingCalculationItem.cs" />
     <Compile Include="IPipingCalculationItemExtensions.cs" />
     <Compile Include="PipingCalculation.cs" />
     <Compile Include="PipingCalculationGroup.cs" />