diff --git a/distro/deb/build.sh b/distro/deb/build.sh
index 3a5a17c..45b70a0 100755
--- a/distro/deb/build.sh
+++ b/distro/deb/build.sh
@@ -44,7 +44,7 @@ done
 
 cd ${curdir}
 
-pkg_size="$( du -sk ${curdir} )"
+pkg_size="$( du -sk "${curdir}" | awk '{ print $1; }' )"
 
 mkdir -p "${destdir}/DEBIAN"
 sed "s|@SIZE@|${pkg_size}|g" "$1" > "${destdir}/DEBIAN/control"