diff --git a/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj b/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
index 0c789a699..47e1b5f1d 100644
--- a/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
@@ -43,7 +43,6 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\autofac\Autofac.dll</HintPath>
     </Reference>
-    <Reference Include="NHibernate, Version=2.1.2.4000, Culture=neutral, PublicKeyToken=aa95f207798dfdb4, processorArchitecture=MSIL" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.ComponentModel.DataAnnotations">