Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Ringtoets.Piping.IO.Test.csproj
===================================================================
diff -u -r0415d97c8733babb1a31bc11de23ee4b0c5038b6 -r10779bb6a6db2d00f4627b2bc190e7e35e1fee3e
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Ringtoets.Piping.IO.Test.csproj	(.../Ringtoets.Piping.IO.Test.csproj)	(revision 0415d97c8733babb1a31bc11de23ee4b0c5038b6)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Ringtoets.Piping.IO.Test.csproj	(.../Ringtoets.Piping.IO.Test.csproj)	(revision 10779bb6a6db2d00f4627b2bc190e7e35e1fee3e)
@@ -108,6 +108,10 @@
       <Project>{35b87b7a-7f50-4139-b563-589ee522b1ed}</Project>
       <Name>Ringtoets.Piping.IO</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\src\Ringtoets.Piping.Primitives\Ringtoets.Piping.Primitives.csproj">
+      <Project>{14C6F716-64E2-4BC4-A1EF-05865FCEFA4C}</Project>
+      <Name>Ringtoets.Piping.Primitives</Name>
+    </ProjectReference>
     <ProjectReference Include="..\Ringtoets.Piping.Data.TestUtil\Ringtoets.Piping.Data.TestUtil.csproj">
       <Project>{955E574D-67CE-4347-AA6B-7DF8A04ED754}</Project>
       <Name>Ringtoets.Piping.Data.TestUtil</Name>