diff --git a/ansible/roles/prometheus/files/alert_rules.yml b/ansible/roles/prometheus/files/alert_rules.yml
index d94ccc17..81ca3da5 100644
--- a/ansible/roles/prometheus/files/alert_rules.yml
+++ b/ansible/roles/prometheus/files/alert_rules.yml
@@ -12,7 +12,7 @@ groups:
     expr: up != 1
     for: 5m
     annotations:
-      summary: '{{ $labels.instance }} is not `up`'
+      summary: '{{ $labels.instance }} {{if $labels.ec2_host}} ({{$labels.ec2_host}}) {{end}} is not `up`'
 
   - alert: systemd # yes, just "systemd", it's unclear what's going wrong :-)
     expr: node_systemd_system_running != 1 # that's basically output of `systemctl is-system-running`