diff --git a/lib/qt/qmake.rb b/lib/qt/qmake.rb
index e4315ed..7fcf8cf 100644
--- a/lib/qt/qmake.rb
+++ b/lib/qt/qmake.rb
@@ -1,4 +1,5 @@
 require 'rbconfig'
+require 'rubygems'
 require 'rubygems/version'
 
 module Qt