diff --git a/_data/rules.yml b/_data/rules.yml
index 2954e7f..9300c23 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -15,7 +15,7 @@ groups:
           - rules:
             - name: Prometheus job missing
               description: A Prometheus job has disappeared
-              query: 'absent(job="prometheus"})'
+              query: 'absent(up{job="prometheus"})'
               severity: warning
             - name: Prometheus target missing
               description: A Prometheus target has disappeared. An exporter might be crashed.