diff --git a/prebuild.xml b/prebuild.xml
index 7e4d46dda7..76ce3f1d47 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -413,7 +413,6 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="libsecondlife.dll"/>
       <Reference name="OpenSim.Framework"/>
-      <Reference name="OpenSim.Framework.InventoryServiceBase"/>
       <Reference name="XMLRPC.dll"/>
 
       <Files>