diff --git a/prebuild.xml b/prebuild.xml
index c6a69d6..df5b460 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -15,7 +15,6 @@
       <Reference name="System.Xml"/>
       <Reference name="System.Drawing"/>
       <Reference name="System.Runtime.Remoting"/>
-      <Reference name="Axiom.MathLib.dll" path="../../bin"/>
       <Reference name="Nini.dll" path="../../../bin"/>
       <Reference name="log4net.dll" path="../../../bin"/>
       <Reference name="XMLRPC.dll" path="../../../bin"/>