diff --git a/prebuild.xml b/prebuild.xml
index 443c4f809f..783bcb4bf4 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -3346,12 +3346,16 @@
       <Reference name="OpenMetaverse.StructuredData" path="../../../bin/"/>
       <Reference name="XMLRPC" path="../../../bin/"/>
       <Reference name="OpenSim.Framework"/>
+      <Reference name="OpenSim.Framework.Communications"/>
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Framework.Servers.HttpServer"/>
       <Reference name="OpenSim.Region.CoreModules"/>
       <Reference name="OpenSim.Region.Framework"/>
-      <Reference name="OpenSim.Region.ScriptEngine.XEngine"/>
+      <Reference name="OpenSim.Region.OptionalModules"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared"/>
+      <Reference name="OpenSim.Region.ScriptEngine.XEngine"/>
+      <Reference name="OpenSim.Services.Interfaces"/>
+      <Reference name="OpenSim.Services.AvatarService"/>
       <Reference name="OpenSim.Tests.Common"/>
       <Files>
         <Match pattern="*.cs" recurse="false"/>