Issue #131: fixing ffi.
Issue #131: fixing ffi.

felipensp/clever,felipensp/clever,clever-lang/clever,felipensp/clever,felipensp/clever,felipensp/clever,clever-lang/clever,clever-lang/clever,felipensp/clever,clever-lang/clever,clever-lang/clever,clever-lang/clever,felipensp/clever,clever-lang/clever