diff --git a/build.xml b/build.xml
index 64c89bc..6f7183c 100644
--- a/build.xml
+++ b/build.xml
@@ -58,7 +58,7 @@
             -libraryjars "${rt_jar}"
 
             -forceprocessing
-            -repackageclasses
+            -repackageclasses d.ff
             <!-- -allowaccessmodification -->
 
             -optimizationpasses 5