diff --git a/prebuild.xml b/prebuild.xml
index 7c94ef2ea9..8973a6cd84 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1371,6 +1371,7 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Framework.Servers.HttpServer"/>
       <Reference name="OpenSim.Servers.Base"/>
+      <Reference name="OpenSim.Services.Base" />
       <Reference name="OpenSim.Services.Interfaces"/>
       <Reference name="OpenSim.Services.UserService"/>
       <Reference name="Nini.dll" />
@@ -1402,6 +1403,7 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Framework.Servers.HttpServer"/>
       <Reference name="OpenSim.Servers.Base"/>
+      <Reference name="OpenSim.Services.Base" />
       <Reference name="OpenSim.Services.Interfaces"/>
       <Reference name="OpenSim.Services.AssetService"/>
       <Reference name="Nini.dll" />
@@ -1437,6 +1439,7 @@
       <Reference name="OpenSim.Framework.Communications"/>
       <Reference name="OpenSim.Data" />
       <Reference name="OpenSim.Region.Framework" />
+      <Reference name="OpenSim.Services.Base" />
       <Reference name="OpenSim.Services.Interfaces" />
       <Reference name="OpenSim.Services.UserService" />
       <Reference name="OpenSim.Framework.Serialization"/>