diff --git a/flask-consul/units/blackbox_manager.py b/flask-consul/units/blackbox_manager.py
index 6387e94..c1ea3c7 100644
--- a/flask-consul/units/blackbox_manager.py
+++ b/flask-consul/units/blackbox_manager.py
@@ -73,7 +73,7 @@ def get_rules():
 - name: Domain
   rules:
   - alert: 站点可用性
-    expr: probe_success == 0
+    expr: probe_success{job="blackbox_exporter"} == 0
     for: 1m
     labels:
       alertype: domain