diff --git a/deploy.sh b/deploy.sh
index bca3589..ce00c16 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -167,7 +167,9 @@ cleanup_old_versions() {
 # 重启服务 + 验证
 restart_and_verify() {
   log "重启 ${APP_NAME} 服务..."
-  if systemctl list-unit-files 2>/dev/null | grep -q "^${APP_NAME}.service"; then
+  # 注意：不要用 "list-unit-files | grep -q"——grep -q 提前退出会让 systemctl 收到
+  # SIGPIPE，在 pipefail 下整条管道判假（unit 多的机器必踩），误报"服务不存在"
+  if systemctl cat "${APP_NAME}" >/dev/null 2>&1; then
     $SUDO systemctl restart "${APP_NAME}"
     $SUDO systemctl enable "${APP_NAME}" >/dev/null 2>&1 || true
   else