diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 03fd90aa8e5c707a5c5982ac7b96f6b081e610ee..74442c8917c6d1569abdfd676b6099b601ca68e4 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -662,7 +662,7 @@ static int get_packet(URLContext *s, int for_header)
     for (;;) {
         RTMPPacket rpkt;
         if ((ret = ff_rtmp_packet_read(rt->stream, &rpkt,
-                                       rt->chunk_size, rt->prev_pkt[0])) != 0) {
+                                       rt->chunk_size, rt->prev_pkt[0])) <= 0) {
             if (ret == 0) {
                 return AVERROR(EAGAIN);
             } else {