diff --git a/lib/assembly/core.js b/lib/assembly/core.js
index 3539aa7..d947fb8 100644
--- a/lib/assembly/core.js
+++ b/lib/assembly/core.js
@@ -26,7 +26,7 @@ var Core = exports.Core = function (options) {
   this.compilerExtensions.push(".html");
 
   var vendorPath = path.join(this.jsRoot, "/vendor");
-  if(path.existsSync(vendorPath) ) {
+  if(fs.existsSync(vendorPath) ) {
     this.paths.push(vendorPath);
   }
   
@@ -167,5 +167,5 @@ function findFile (filename, extensions, callback) {
     return filename + ex;
   });
 
-  async.detect(files, path.exists, callback);
+  async.detect(files, fs.exists, callback);
 };
\ No newline at end of file