diff --git a/prebuild.xml b/prebuild.xml
index e37fef93cf..4f6ed98fc2 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1747,7 +1747,6 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Region.Physics.Manager"/>
       <Reference name="OpenSim.Region.Physics.ConvexDecompositionDotNet"/>
-      <Reference name="BulletXNA.dll" path="../../../../bin/"/>
       <Reference name="log4net.dll" path="../../../../bin/"/>
 
       <Files>