diff --git a/.env b/.env
index f674026..41266bb 100644
--- a/.env
+++ b/.env
@@ -63,7 +63,7 @@ OPENIM_ADMIN_FRONT_PORT=11002              # Admin frontend port for OpenIM
 
 # Monitoring ports
 PROMETHEUS_PORT=19090                      # Port for Prometheus server
-ALERT_MANAGER_PORT=19093                   # Port for Alert Manager
+ALERTMANAGER_PORT=19093                   # Port for Alert Manager
 GRAFANA_PORT=13000                         # Port for Grafana
 NODE_EXPORTER_PORT=19100                   # Port for Prometheus Node Exporter