diff --git a/OpenSim/Services/FSAssetService/FSAssetService.cs b/OpenSim/Services/FSAssetService/FSAssetService.cs
index 0e578d2fac..3662e279c6 100644
--- a/OpenSim/Services/FSAssetService/FSAssetService.cs
+++ b/OpenSim/Services/FSAssetService/FSAssetService.cs
@@ -40,9 +40,6 @@ using OpenSim.Services.Base;
 using OpenSim.Services.Interfaces;
 using Nini.Config;
 using log4net;
-using MySql.Data.MySqlClient;
-using System.Data;
-using Careminster;
 using OpenMetaverse;
 using System.Security.Cryptography;
 
diff --git a/prebuild.xml b/prebuild.xml
index 831e6a905b..f44008c43c 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -921,6 +921,7 @@
 
       <ReferencePath>../../../bin/</ReferencePath>
       <Reference name="System"/>
+      <Reference name="System.Core"/>
       <Reference name="OpenMetaverseTypes" path="../../../bin/"/>
       <Reference name="OpenMetaverse" path="../../../bin/"/>
       <Reference name="OpenSim.Framework"/>