Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Plugin/Ringtoets.DuneErosion.Plugin.csproj
===================================================================
diff -u -rb1b17b2e21cbcffc6fc5f123c83a17cf29f8dced -r26e6c71dacff987569f34296db2987aabf6d4b84
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Plugin/Ringtoets.DuneErosion.Plugin.csproj	(.../Ringtoets.DuneErosion.Plugin.csproj)	(revision b1b17b2e21cbcffc6fc5f123c83a17cf29f8dced)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Plugin/Ringtoets.DuneErosion.Plugin.csproj	(.../Ringtoets.DuneErosion.Plugin.csproj)	(revision 26e6c71dacff987569f34296db2987aabf6d4b84)
@@ -34,6 +34,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>