diff --git a/prebuild.xml b/prebuild.xml
index 29b0861d04..0b0b25ede3 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1509,6 +1509,7 @@
       <Reference name="Mono.Addins.dll" />
       <Reference name="Nini.dll" />
       <Reference name="OpenSim"/>
+      <Reference name="OpenSim.Framework"/>
       <Reference name="OpenSim.Region.Framework"/>
       <Reference name="System"/>
       <Reference name="System.Xml"/>