diff --git a/lib/mysql.js b/lib/mysql.js
index 7fabe86..a57f6bb 100644
--- a/lib/mysql.js
+++ b/lib/mysql.js
@@ -339,7 +339,7 @@ function buildOrderBy(order) {
         order = [order];
     }
     return 'ORDER BY ' + order.map(function(o) {
-        var t = o.split(/\s+/);
+        var t = o.split(/[\s,]+/);
         if (t.length === 1) return '`' + o + '`';
         return '`' + t[0] + '` ' + t[1];
     }).join(', ');