if [ "$1" = "upgrade" ] && ! dpkg-query -S #CENTRALCAT# >/dev/null 2>&1; then
	# If the dpkg-query command returns non-zero, the central catalog is
	# not owned by any package. This is due to an old behaviour of
	# debhelper. Now that file becomes a conffile. In order to avoid a
	# question during installation, we remove the old non-conffile.
	rm -f #CENTRALCAT#
fi