def to_query
q = "access_token=#{token}&token_type=bearer"
- q << "&state=#{URI.escape(state)}" if @state
+ q << "&state=#{CGI.escape(state)}" if @state
q << "&expires_in=#{expires_in}" if expires_at
- q << "&scope=#{URI.escape(scope)}" if scope
+ q << "&scope=#{CGI.escape(scope)}" if scope
q
end