--- glib2-1.2.1/test/test_spawn.rb.env	2013-02-28 13:32:06.205560101 +0900
+++ glib2-1.2.1/test/test_spawn.rb	2013-02-28 14:03:14.029586308 +0900
@@ -19,7 +19,9 @@
   end
 
   def test_async_clear_environment
-    if RbConfig.respond_to?(:ruby)
+    if File.exist?('/usr/bin/ruby-mri')
+      ruby = '/usr/bin/ruby-mri'
+    elsif RbConfig.respond_to?(:ruby)
       ruby = RbConfig.ruby
     else
       ruby = File.join(RbConfig::CONFIG['bindir'],