diff --git a/data/Rakefile b/data/Rakefile
index 4f30e2c4..d020be7c 100644
--- a/data/Rakefile
+++ b/data/Rakefile
@@ -459,6 +459,7 @@ task :android do
 EOS
         txt = File.read(javap_tmp_path)
         txt.scan(/([^\s]+)\s+extends\s+[^{]+\s*\{([^}]+)\}/).each do |klass, body_txt|
+          klass = klass.gsub(/\./, '/')
           bs_data << <<EOS
   <class name=\"#{klass}\">
 EOS