diff --git a/bin/jsduck b/bin/jsduck
index 2f24bf3100977cb2834961b6247944277c93c234..8ba84e14bc583181e71b031807766393dc8130c3 100755
--- a/bin/jsduck
+++ b/bin/jsduck
@@ -17,6 +17,7 @@
 # For running when gem not installed
 $:.unshift File.dirname(File.dirname(__FILE__)) + "/lib"
 
+require 'rubygems'
 require 'jsduck/app'
 require 'jsduck/options'