diff --git a/WebsitePanel/Sources/WebsitePanel.WebDavPortal/WebsitePanel.WebDavPortal.csproj b/WebsitePanel/Sources/WebsitePanel.WebDavPortal/WebsitePanel.WebDavPortal.csproj
index 9416c935..5b2ea9ec 100644
--- a/WebsitePanel/Sources/WebsitePanel.WebDavPortal/WebsitePanel.WebDavPortal.csproj
+++ b/WebsitePanel/Sources/WebsitePanel.WebDavPortal/WebsitePanel.WebDavPortal.csproj
@@ -51,6 +51,7 @@
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="Microsoft.Web.Services3">
       <HintPath>..\..\Lib\Microsoft.Web.Services3.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="Newtonsoft.Json">
       <HintPath>..\packages\Newtonsoft.Json.6.0.6\lib\net45\Newtonsoft.Json.dll</HintPath>