diff --git a/docker-compose.yml b/docker-compose.yml
index 0c022c91e..32e281398 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -209,5 +209,5 @@ services:
       - '--path.procfs=/host/proc'
       - '--path.sysfs=/host/sys'
       - '--path.rootfs=/rootfs'
-      - '--web.listen-address=:{NODE_EXPORTER_PORT}'
+      - '--web.listen-address=:${NODE_EXPORTER_PORT}'
     network_mode: host