diff --git a/ceph/ceph.backup.deb.files.sh b/ceph/ceph.backup.deb.files.sh
index 83659f0..92e3639 100755
--- a/ceph/ceph.backup.deb.files.sh
+++ b/ceph/ceph.backup.deb.files.sh
@@ -35,7 +35,12 @@ if [ "$(command -v ceph)" ]; then
 
 		## Download deb files of all ceph related packages installed on the system
 		[ "${DEBUG}" -eq "0" ] && printf '%b\n' "Download deb files of all ceph related packages installed on the system."
-		apt download -- $(dpkg -l | awk -v pattern="${CEPH_DEB_PKG_PATTERN}" '$0~pattern {print $2"="$3}') || exit 3
+		## Use aptitude before Debian Stretch because apt doesn't yet know "download" action
+		if [ "$(cat /etc/debian_version | cut -c1)" -lt "9" ]; then
+			aptitude download -- $(dpkg -l | awk -v pattern="${CEPH_DEB_PKG_PATTERN}" '$0~pattern {print $2"="$3}') || exit 3
+		else
+			apt download -- $(dpkg -l | awk -v pattern="${CEPH_DEB_PKG_PATTERN}" '$0~pattern {print $2"="$3}') || exit 3
+		fi
 
 		[ "${DEBUG}" -eq "0" ] && printf '%b\n' "Backup Ceph deb files in version : ${CEPH_VERSION}"
 		tar cf "${BKP_TAR_PATH}" ./*.deb > /dev/null 2>&1 || exit 4