diff --git a/lib/mysql.js b/lib/mysql.js
index 2a48299..9debd5e 100644
--- a/lib/mysql.js
+++ b/lib/mysql.js
@@ -635,7 +635,7 @@ MySQL.prototype.autoupdate = function (models, cb) {
       wait++;
       self.query('SHOW FIELDS FROM ' + self.tableEscaped(model), function (err, fields) {
         self.query('SHOW INDEXES FROM ' + self.tableEscaped(model), function (err, indexes) {
-          if (!err && fields.length) {
+          if (!err && fields && fields.length) {
             self.alterTable(model, fields, indexes, done);
           } else {
             self.createTable(model, done);