diff --git a/nextcloud/actions/upgrade b/nextcloud/actions/upgrade
index fce3011..2ef408e 100755
--- a/nextcloud/actions/upgrade
+++ b/nextcloud/actions/upgrade
@@ -258,7 +258,7 @@ if grep "^Nextcloud is in maintenance mode" "$MIGRATION_TMPDIR/migration.log" >/
 fi
 info "Successfully upgraded from ${WHITE}$current_config_version${NORMAL} to ${WHITE}$target${NORMAL}"
 
-if [ -z "no_hint" ]; then
+if [ -z "$no_hint" ]; then
     cat <<EOF >&2
 Don't forget to force the version in your \`\`compose.yml\`\`. For instance: