diff --git a/lib/type-loader.js b/lib/type-loader.js
index 71f508a..ae227d5 100644
--- a/lib/type-loader.js
+++ b/lib/type-loader.js
@@ -29,7 +29,7 @@ module.exports = function loadTypes(basepath, fn) {
           try {
             debug('Loading', require('path').resolve(path) + '/node_modules/' + file);
             var c = require(require('path').resolve(path) + '/node_modules/' + file);
-            if(c.prototype.__resource__) {
+            if(c && c.prototype && c.prototype.__resource__) {
               debug('is a resource ', c && c.name);
               types[c.name] = c; 
             }