diff --git a/rootfs/etc/confd/templates/www.conf.tmpl b/rootfs/etc/confd/templates/www.conf.tmpl
index 10653f3..fbf807f 100644
--- a/rootfs/etc/confd/templates/www.conf.tmpl
+++ b/rootfs/etc/confd/templates/www.conf.tmpl
@@ -424,8 +424,8 @@ env[PATH] = /usr/local/bin:/usr/bin:/bin
 php_admin_value[default_charset] = UTF-8
 
 {{if (getenv "MAXUPLOADSIZE")}}
-php_admin_value[upload_max_filesize] = {{getenv "MAXUPLOADSIZE"}}
-php_admin_value[post_max_size] = {{getenv "MAXUPLOADSIZE"}}
+php_admin_value[upload_max_filesize] = {{getenv "MAX_UPLOAD_SIZE" "512M"}}
+php_admin_value[post_max_size] = {{getenv "MAX_UPLOAD_SIZE" "512M"}}
 {{end}}
 
 {{if (getenv "PHP_ADMIN_VALUES")}}