diff --git a/documentation/examples/prometheus.yml b/documentation/examples/prometheus.yml
index 3f04f541c..a69d6f07d 100644
--- a/documentation/examples/prometheus.yml
+++ b/documentation/examples/prometheus.yml
@@ -12,7 +12,7 @@ global:
 # Alertmanager configuration
 alerting:
   alertmanagers:
-  - static_config:
+  - static_configs:
     - targets:
       # - alertmanager:9093