diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 664272c0ac..c9fa54d3a8 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -382,7 +382,7 @@ static void parse_fmtp(AVFormatContext *s, RTSPState *rt,
         if (rtsp_st->sdp_payload_type == payload_type &&
             rtsp_st->dynamic_handler &&
             rtsp_st->dynamic_handler->parse_sdp_a_line) {
-            rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
+            rtsp_st->dynamic_handler->parse_sdp_a_line(s, rtsp_st->stream_index,
                 rtsp_st->dynamic_protocol_context, line);
         }
     }