diff --git a/examples/ha/alertmanager.yml b/examples/ha/alertmanager.yml
index 7bd5e0c5d3..8f79edb9d2 100644
--- a/examples/ha/alertmanager.yml
+++ b/examples/ha/alertmanager.yml
@@ -9,8 +9,11 @@ receivers:
     webhook_configs:
       - url: 'http://127.0.0.1:5001/'
 inhibit_rules:
-  - source_match:
-      severity: 'critical'
-    target_match:
-      severity: 'warning'
-    equal: ['alertname', 'dev', 'instance']
+  - source_matchers: [severity="critical"]
+    target_matchers: [severity="warning"]
+    # Apply inhibition if the alertname is the same.
+    # CAUTION:
+    #   If all label names listed in `equal` are missing
+    #   from both the source and target alerts,
+    #   the inhibition rule will apply!
+    equal: [alertname, dev, instance]