diff --git a/prebuild.xml b/prebuild.xml
index 4265f30753..2e95c0dc9e 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -684,7 +684,7 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Region.Physics.Manager" localCopy="false"/>
       <Reference name="log4net.dll"/>
-      <Reference name="PrimMesher.dll" localCopy="false"/>
+      <Reference name="./Physics/PrimMesher.dll" localCopy="false"/>
 
       <Files>
         <Match pattern="*.cs" recurse="true"/>