diff --git a/templates/scripts/includes/deployment.sh b/templates/scripts/includes/deployment.sh
index 9c883fe..944a880 100755
--- a/templates/scripts/includes/deployment.sh
+++ b/templates/scripts/includes/deployment.sh
@@ -1263,7 +1263,7 @@ create_ngcp_partitions() {
 
 create_debian_partitions() {
   # rootfs
-  local root_size=8G
+  local root_size="${ROOTFS_SIZE:-8G}"
   echo "Creating LV root with ${root_size}"
   lvcreate --yes -n root -L "${root_size}" "${VG_NAME}"