diff --git a/Rakefile.cross b/Rakefile.cross
index 1cecb7a87787c901ff1363106a270007b9c7a8f9..5ea87349dfeca9026139520829c25021f5333fdf 100644
--- a/Rakefile.cross
+++ b/Rakefile.cross
@@ -6,7 +6,8 @@ require 'hoe'
 require 'rake/extensiontask'
 require 'rake/extensioncompiler'
 require 'uri'
-require "rbconfig"
+require 'rbconfig'
+require 'pathname'
 
 ENV['RUBY_CC_VERSION'] ||= '1.8.7:1.9.2'