diff --git a/SDL/SDL.vbproj b/SDL/SDL.vbproj
index f60fd827..f66bf892 100644
--- a/SDL/SDL.vbproj
+++ b/SDL/SDL.vbproj
@@ -490,6 +490,7 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
+    <Import Include="com.esendex.sdk.optouts" />
     <Import Include="Microsoft.VisualBasic" />
     <Import Include="System" />
     <Import Include="System.Collections" />