diff --git a/lib/client.js b/lib/client.js
index c5ae4294..aa60f6f1 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -284,7 +284,7 @@ Client.prototype.copyTo = function (text) {
 
 Client.prototype.query = function(config, values, callback) {
   //can take in strings, config object or query object
-  var query = (config instanceof Query) ? config :
+  var query = (typeof config.submit == 'function') ? config :
      new Query(config, values, callback);
   if(this.binary && !query.binary) {
     query.binary = true;