diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 2f800d9e4..5a4525c03 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -30,9 +30,8 @@ services:
     volumes:
       # Persist private key through containers, the parent path to WIREGUARD_PRIVATE_KEY_PATH.
       - /data/firezone:/var/firezone
-    env_files:
+    env_file:
       - .env
-
     cap_add:
       - NET_ADMIN
       - SYS_MODULE