@ -29,7 +29,7 @@ namespace ppspeech {
class FrontEngineInterface : public TextNormalizer {
public:
FrontEngineInterface(std::string conf) : _conf_file(conf) {
explicit FrontEngineInterface(std::string conf) : _conf_file(conf) {
TextNormalizer();
_jieba = nullptr;
_initialed = false;