Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Ringtoets.HydraRing.Calculation.csproj
===================================================================
diff -u -r22c101f964ed191dbd440a41a871b23700cbf0d0 -r5cdaf6a62202805aa0abe5636e372a66b1bec723
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Ringtoets.HydraRing.Calculation.csproj	(.../Ringtoets.HydraRing.Calculation.csproj)	(revision 22c101f964ed191dbd440a41a871b23700cbf0d0)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Ringtoets.HydraRing.Calculation.csproj	(.../Ringtoets.HydraRing.Calculation.csproj)	(revision 5cdaf6a62202805aa0abe5636e372a66b1bec723)
@@ -112,6 +112,7 @@
     <Compile Include="Services\HydraRingFileName.cs" />
     <Compile Include="Services\HydraRingInitializationService.cs" />
     <Compile Include="Services\HydraRingProcessFactory.cs" />
+    <Compile Include="Services\IHydraRingCalculationService.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\..\Core\Common\src\Core.Common.Base\Core.Common.Base.csproj">