diff --git a/Dockerfile b/Dockerfile
index b4f5b24..2ed6978 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -48,5 +48,4 @@ VOLUME /var/lib/postgresql/
 VOLUME /var/log/vmaig/
 
 CMD supervisord -c /etc/supervisord.conf
-EXPOSE 80
-EXPOSE 443
+EXPOSE 80 443
diff --git a/Dockerfile_cn b/Dockerfile_cn
index 6a98f28..e083e53 100644
--- a/Dockerfile_cn
+++ b/Dockerfile_cn
@@ -50,5 +50,4 @@ VOLUME /var/lib/postgresql/
 VOLUME /var/log/vmaig/
 
 CMD supervisord -c /etc/supervisord.conf
-EXPOSE 80
-EXPOSE 443
+EXPOSE 80 443