diff --git a/build/Build.proj b/build/Build.proj
index 0e4c4bc196..48db7e9b5b 100644
--- a/build/Build.proj
+++ b/build/Build.proj
@@ -46,7 +46,9 @@
  </PropertyGroup>
 
  <ItemGroup>
-   <SystemFolders Include="$(WebAppFolder)App_Code" />
+	 <SystemFolders Include="$(WebAppFolder)App_Plugins" />
+	 <SystemFolders Include="$(WebAppFolder)App_Plugins\Packages" />
+	 <SystemFolders Include="$(WebAppFolder)App_Code" />
    <SystemFolders Include="$(WebAppFolder)App_Data" />
    <SystemFolders Include="$(WebAppFolder)media" />
    <SystemFolders Include="$(WebAppFolder)masterpages" />