diff --git a/src/gquic.h b/src/gquic.h
index 804f136..85c8821 100644
--- a/src/gquic.h
+++ b/src/gquic.h
@@ -177,6 +177,6 @@ int quic_process(struct streaminfo *pstream, struct _quic_context* _context, int
 
 int quic_init_stream(void **pme, int thread_seq);  // **pme=(struct _quic_context* )
 void quic_release_stream(struct streaminfo *a_tcp, void **pme, int thread_seq);
-static enum _QUIC_VERSION parse_q0to43_header(struct streaminfo *pstream, struct _quic_context* _context, char *payload, int payload_len, int *used_len);
+enum _QUIC_VERSION is_quic_protocol(struct streaminfo *pstream, struct _quic_context* _context, char *payload, int payload_len, int *used_len);
 
 #endif /* SRC_GQUIC_H_ */