Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Plugin.Test/Ringtoets.HeightStructures.Plugin.Test.csproj
===================================================================
diff -u -ra2293026e111698c108d23f2f1fc7a09764a1bb6 -re24eab2c6007074685556ec97dbe45940a520687
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Plugin.Test/Ringtoets.HeightStructures.Plugin.Test.csproj	(.../Ringtoets.HeightStructures.Plugin.Test.csproj)	(revision a2293026e111698c108d23f2f1fc7a09764a1bb6)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Plugin.Test/Ringtoets.HeightStructures.Plugin.Test.csproj	(.../Ringtoets.HeightStructures.Plugin.Test.csproj)	(revision e24eab2c6007074685556ec97dbe45940a520687)
@@ -47,6 +47,7 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="HeightStructuresGuiPluginTest.cs" />