diff --git a/lib/motion/project/config.rb b/lib/motion/project/config.rb
index 79b6ccd3..7b8347f7 100644
--- a/lib/motion/project/config.rb
+++ b/lib/motion/project/config.rb
@@ -592,8 +592,7 @@ EOS
       a = sdk_version.scan(/(\d+)\.(\d+)/)[0]
       sdk_version_headers = ((a[0].to_i * 10000) + (a[1].to_i * 100)).to_s
       extra_flags = OSX_VERSION >= 10.7 ? '--no-64-bit' : ''
-
-      sh "/usr/bin/gen_bridge_metadata --format complete #{extra_flags} --cflags \"-isysroot #{sdk_path} -miphoneos-version-min=#{sdk_version} -D__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__=#{sdk_version_headers} -I. #{includes.join(' ')}\" #{headers.join(' ')} -o \"#{bs_file}\""
+      sh "RUBYOPT='' /usr/bin/gen_bridge_metadata --format complete #{extra_flags} --cflags \"-isysroot #{sdk_path} -miphoneos-version-min=#{sdk_version} -D__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__=#{sdk_version_headers} -I. #{includes.join(' ')}\" #{headers.join(' ')} -o \"#{bs_file}\""
     end
   end
 end; end