diff --git a/heat/meta/prometheus.yml b/heat/meta/prometheus.yml
index 5155e72..a8dee85 100644
--- a/heat/meta/prometheus.yml
+++ b/heat/meta/prometheus.yml
@@ -7,7 +7,7 @@
   alert:
     HeatAPIDown:
       if: >-
-        max(openstack_api_check_status{service=~"heat.+"}) by (service) == 0
+        openstack_api_check_status{service=~"heat.*"} == 0
       for: 2m
       labels:
         severity: down