diff --git a/index.js b/index.js
index 55d6478..6ae0451 100644
--- a/index.js
+++ b/index.js
@@ -28,6 +28,10 @@ var parse = function(options) {
 
 	return result;
 };
+var shouldExtend = function(that, proto, name) {
+	if (name[0] === '_') return false;
+	return !that[name] && !proto.__lookupGetter__(name) && typeof proto[name] === 'function';
+};
 
 // basicly just a proxy prototype
 var Cursor = function(oncursor) {
@@ -146,7 +150,7 @@ Collection.prototype.disconnect = function() {
 };
 
 Object.keys(mongo.Collection.prototype).forEach(function(name) { // we just wanna proxy any remaining methods on collections
-	if (!Collection.prototype[name] && typeof mongo.Collection.prototype[name] === 'function') {
+	if (shouldExtend(Collection.prototype, mongo.Collection.prototype, name)) {
 		Collection.prototype[name] = function() {
 			this._exec(name, arguments);
 		};
@@ -215,7 +219,7 @@ exports.connect = function(url, collections) {
 	};
 
 	Object.keys(mongo.Db.prototype).forEach(function(name) {
-		if (!that[name] && typeof mongo.Db.prototype[name] === 'function') {
+		if (shouldExtend(that, mongo.Db.prototype, name)) {
 			that[name] = function() {
 				var args = arguments;
 				var callback = args[args.length-1] || noop;
diff --git a/package.json b/package.json
index 88b96ce..730da44 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
  "name":"mongojs",
  "description":"a simple mongo module that implements the mongo api",
  "keywords": ["mongo", "db", "mongodb"],
- "version":"0.3.2",
+ "version":"0.4.0",
  "homepage" : "https://github.com/gett/mongojs",
  "author": "Ge.tt <hello@ge.tt>",
  "contributors": [
@@ -10,5 +10,5 @@
    "Ian Jorgensen <i@ge.tt>"
  ],
  "main":"./index.js",
- "dependencies": {"common":">=0.1.0", "mongodb":">=0.9.6"}
+ "dependencies": {"common":">=0.1.0", "mongodb":"1.x.x"}
 }