diff --git a/html/user/lammps.php b/html/user/lammps.php
index ec0c360c71..bf02a4ba10 100644
--- a/html/user/lammps.php
+++ b/html/user/lammps.php
@@ -14,6 +14,8 @@
 error_reporting(E_ALL);
 ini_set('display_errors', true);
 ini_set('display_startup_errors', true);
+ini_set('post_max_size', 64M);
+ini_set('upload_max_filesize', 64M);
 
 require_once("../inc/util.inc");
 require_once("../inc/submit_db.inc");