Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/Deltares.DamEngine.Interface.csproj
===================================================================
diff -u -r4796 -r5090
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/Deltares.DamEngine.Interface.csproj	(.../Deltares.DamEngine.Interface.csproj)	(revision 4796)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/Deltares.DamEngine.Interface.csproj	(.../Deltares.DamEngine.Interface.csproj)	(revision 5090)
@@ -4,6 +4,11 @@
         <Folder Include="Properties"/>
     </ItemGroup>
     <ItemGroup>
+        <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
+            <_Parameter1>Deltares.DamEngine.Interface.Tests</_Parameter1>
+        </AssemblyAttribute>
+    </ItemGroup>
+    <ItemGroup>
         <ProjectReference Include="..\Deltares.DamEngine.Calculators\Deltares.DamEngine.Calculators.csproj"/>
         <ProjectReference Include="..\Deltares.DamEngine.Data\Deltares.DamEngine.Data.csproj"/>
         <ProjectReference Include="..\Deltares.DamEngine.Io\Deltares.DamEngine.Io.csproj"/>