diff --git a/build_tools/prep_tarball b/build_tools/prep_tarball
index c2adefc11d..4d4aa41b82 100755
--- a/build_tools/prep_tarball
+++ b/build_tools/prep_tarball
@@ -6,3 +6,7 @@
 # It will be executed from the top-level directory of the project.
 
 make -C sounds all MENUSELECT_CORE_SOUNDS=CORE-SOUNDS-EN-GSM MENUSELECT_MOH=MOH-FREEPLAY-WAV WGET=wget DOWNLOAD=wget
+
+cd doc
+rubber asterisk.tex 
+cd ..