diff --git a/docker-compose.override.yml b/docker-compose.override.yml
index 0347dc601e..58e4410e4b 100644
--- a/docker-compose.override.yml
+++ b/docker-compose.override.yml
@@ -5,7 +5,7 @@ version: "3.7"
 services:
   reverse-proxy:
     ports:
-      - ${REVERSE_PROXY_HOST_PORT_HTTP}:80
+      - "${REVERSE_PROXY_HOST_PORT_HTTP}:80"
     volumes:
       - ./reverse-proxy/conf.d.dev:/etc/nginx/conf.d:ro
     command: ["nginx-debug", "-g", "daemon off;"]
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index d772f6783a..4e9bffecc8 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -5,7 +5,7 @@ version: "3.7"
 services:
   reverse-proxy:
     ports:
-      - ${REVERSE_PROXY_HOST_PORT_HTTPS}:443
+      - "${REVERSE_PROXY_HOST_PORT_HTTPS}:443"
     depends_on:
       - web
     volumes: