diff --git a/data/helpers.d/filesystem b/data/helpers.d/filesystem
index 5b55b752f..dfea026b6 100644
--- a/data/helpers.d/filesystem
+++ b/data/helpers.d/filesystem
@@ -64,6 +64,8 @@ ynh_backup() {
     [[ -e "${SRC_PATH}" ]] || {
         if [ "$NOT_MANDATORY" == "0" ]
         then
+		echo "Source path '${SRC_PATH}' does not exist" >&2
+
                 # This is a temporary fix for fail2ban config files missing after the migration to stretch.
                 if echo "${SRC_PATH}" | grep --quiet "/etc/fail2ban"
                 then