diff --git a/build_tools/prep_tarball b/build_tools/prep_tarball
index c2adefc11d316863d391c660b1a808c26202c8ab..4d4aa41b827d12885609c88c1fa3ab1b4d9d6493 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 ..