diff --git a/libavformat/rtsp.h b/libavformat/rtsp.h
index a0aac17028..6f441209ac 100644
--- a/libavformat/rtsp.h
+++ b/libavformat/rtsp.h
@@ -315,7 +315,6 @@ typedef struct RTSPStream {
     //@}
 } RTSPStream;
 
-int rtsp_init(void);
 void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf);
 
 #if LIBAVFORMAT_VERSION_INT < (53 << 16)