diff --git a/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj b/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj
index 43aab0615..0228979ef 100644
--- a/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj
@@ -39,30 +39,11 @@
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj b/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj
index 211a8d352..e3ef14090 100644
--- a/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj
@@ -33,21 +33,8 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Core" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Xml.Linq" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Migrations.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj b/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj
index 738019f49..a45d57ee6 100644
--- a/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj
@@ -52,36 +52,13 @@
       <HintPath>..\..\..\..\lib\dlr\Microsoft.Scripting.dll</HintPath>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc">
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />