bin/calabash-android-build.rb in calabash-android-0.4.0.pre6 vs bin/calabash-android-build.rb in calabash-android-0.4.0.pre7

@@ -16,10 +16,10 @@
   Dir.mktmpdir do |workspace_dir|
     Dir.chdir(workspace_dir) do
       FileUtils.cp(unsigned_test_apk, "TestServer.apk")
       FileUtils.cp(File.join(File.dirname(__FILE__), '..', 'test-server/AndroidManifest.xml'), "AndroidManifest.xml")
 
-      unless system %Q{ruby -pi.bak -e "gsub(/#targetPackage#/, '#{package_name(app)}')" AndroidManifest.xml}
+      unless system %Q{"#{RbConfig.ruby}" -pi.bak -e "gsub(/#targetPackage#/, '#{package_name(app)}')" AndroidManifest.xml}
         raise "Could not replace package name in manifest"
       end
 
       unless system %Q{"#{ENV["ANDROID_HOME"]}/platform-tools/aapt" package -M AndroidManifest.xml  -I "#{android_platform}/android.jar" -F dummy.apk}
         raise "Could not create dummy.apk"
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