diff --git a/data/hooks/conf_regen/06-slapd b/data/hooks/conf_regen/06-slapd
index cc861a47..b3353962 100755
--- a/data/hooks/conf_regen/06-slapd
+++ b/data/hooks/conf_regen/06-slapd
@@ -82,7 +82,7 @@ do_post_regen() {
   sudo slaptest -Q -u -f /etc/ldap/slapd.conf
 
   # check if a backup should be restored
-  backup_dir=$(cat "$tmp_backup_dir_file" || true)
+  backup_dir=$(cat "$tmp_backup_dir_file" 2>/dev/null || true)
   if [[ -n "$backup_dir" && -f "${backup_dir}/dc=yunohost-dc=org.ldif" ]]; then
       # regenerate LDAP config directory and import database as root
       # since the admin user may be unavailable