diff --git a/prebuild.xml b/prebuild.xml
index 1df04c198a..4c7bc5d55a 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1696,7 +1696,6 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared.CodeTools"/>
-      <Reference name="OpenSim.Region.ScriptEngine.Shared.Instance"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared.Api"/>
       <Reference name="SmartThreadPool"/>
       <Reference name="Axiom.MathLib.dll" localCopy="false"/>