1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/rtmppkt.c b/libavformat/rtmppkt.c
index 63b0628799..93790eb525 100644
--- a/libavformat/rtmppkt.c
+++ b/libavformat/rtmppkt.c
@@ -233,9 +233,11 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
 int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
                           int timestamp, int size)
 {
+    if (size) {
     pkt->data = av_malloc(size);
     if (!pkt->data)
         return AVERROR(ENOMEM);
+    }
     pkt->data_size  = size;
     pkt->channel_id = channel_id;
     pkt->type       = type;