diff --git a/Gruntfile.coffee b/Gruntfile.coffee
index 4275fbf..aa52db4 100644
--- a/Gruntfile.coffee
+++ b/Gruntfile.coffee
@@ -25,7 +25,7 @@ module.exports = (grunt) ->
 
     shell:
       test:
-        command: 'node --harmony_collections node_modules/.bin/jasmine-focused --coffee --captureExceptions --forceexit spec'
+        command: 'node node_modules/.bin/jasmine-focused --coffee --captureExceptions --forceexit spec'
         options:
           stdout: true
           stderr: true