diff --git a/adminer/include/editing.inc.php b/adminer/include/editing.inc.php
index a75afa98..77c9dffc 100644
--- a/adminer/include/editing.inc.php
+++ b/adminer/include/editing.inc.php
@@ -122,9 +122,10 @@ function process_type($field, $collate = "COLLATE") {
 
 function process_field($field, $type_field) {
 	global $dbh;
+	$default = $field["default"] . ($field["on_update"] ? " ON UPDATE $field[on_update]" : "");
 	return idf_escape($field["field"]) . process_type($type_field)
 		. ($field["null"] ? " NULL" : " NOT NULL") // NULL for timestamp
-		. (!$field["has_default"] || $field["auto_increment"] || ereg('text|blob', $field["type"]) ? "" : " DEFAULT " . ($field["type"] == "timestamp" && eregi("^CURRENT_TIMESTAMP( on update CURRENT_TIMESTAMP)?$", $field["default"]) ? $field["default"] : $dbh->quote($field["default"])))
+		. (!isset($field["default"]) || $field["auto_increment"] || ereg('text|blob', $field["type"]) ? "" : " DEFAULT " . ($field["type"] == "timestamp" && eregi("^CURRENT_TIMESTAMP( on update CURRENT_TIMESTAMP)?$", $default) ? $default : $dbh->quote($default)))
 		. " COMMENT " . $dbh->quote($field["comment"])
 	;
 }