diff --git a/docker/README.md b/docker/README.md
index 8dc1f264a..444324af8 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -124,7 +124,7 @@ Corresponding `docker-compose.yml` overrides:
     environment:
       MEMPOOL_NETWORK: ""
       MEMPOOL_BACKEND: ""
-      MEMPOOL_HTTP_PORT: ""
+      BACKEND_HTTP_PORT: ""
       MEMPOOL_SPAWN_CLUSTER_PROCS: ""
       MEMPOOL_API_URL_PREFIX: ""
       MEMPOOL_POLL_RATE_MS: ""