diff --git a/upgrade.php b/upgrade.php
index c2fb1d593..c385b91f1 100644
--- a/upgrade.php
+++ b/upgrade.php
@@ -78,7 +78,7 @@ function get_columns_of($tables)
   foreach ($tables as $table)
   {
     $query = '
-DESC '.$table.'
+DESC `'.$table.'`
 ;';
     $result = pwg_query($query);