diff --git a/libavformat/rtsp.h b/libavformat/rtsp.h
index 6bdd9a11ab..481e2ba499 100644
--- a/libavformat/rtsp.h
+++ b/libavformat/rtsp.h
@@ -76,7 +76,7 @@ typedef int FFRTSPCallback(enum RTSPCallbackAction action,
                            char *buf, int buf_size,
                            void *arg);
 
-/* useful for modules: set RTSP callback function */
+/** useful for modules: set RTSP callback function */
 void rtsp_set_callback(FFRTSPCallback *rtsp_cb);
 
 int rtsp_init(void);