diff --git a/lib/native.js b/lib/native.js
index cab0d57c..9dac41c1 100644
--- a/lib/native.js
+++ b/lib/native.js
@@ -113,7 +113,7 @@ var NativeQuery = function(text, values, callback) {
     this.name = text.name;
     if(typeof values === 'function') {
       this.callback = values;
-    } else if(typeof values !== 'undefined') {
+    } else if(values) {
       this.values = values;
       this.callback = callback;
     }
diff --git a/package.json b/package.json
index f4341282..4f957c76 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 { "name": "pg",
-  "version": "0.5.4",
+  "version": "0.5.5",
   "description": "PostgreSQL client - pure javascript & libpq with the same API",
   "keywords" : ["postgres", "pg", "libpq", "postgre", "database", "rdbms"],
   "homepage": "http://github.com/brianc/node-postgres",