diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
index 0c1f57a50d..b306a4cd9a 100644
--- a/libavformat/rtpenc.c
+++ b/libavformat/rtpenc.c
@@ -271,6 +271,8 @@ static int rtp_write_header(AVFormatContext *s1)
         goto defaultcase;
     case AV_CODEC_ID_AAC:
         s->num_frames = 0;
+        if (!s->max_frames_per_packet)
+            s->max_frames_per_packet = 5;
         goto defaultcase;
     default:
 defaultcase:
diff --git a/libavformat/rtpenc_aac.c b/libavformat/rtpenc_aac.c
index 8e39605979..7dcdec9499 100644
--- a/libavformat/rtpenc_aac.c
+++ b/libavformat/rtpenc_aac.c
@@ -27,8 +27,7 @@ void ff_rtp_send_aac(AVFormatContext *s1, const uint8_t *buff, int size)
     RTPMuxContext *s = s1->priv_data;
     int len, max_packet_size;
     uint8_t *p;
-    const int max_frames_per_packet = s->max_frames_per_packet ? s->max_frames_per_packet : 5;
-    const int max_au_headers_size = 2 + 2 * max_frames_per_packet;
+    const int max_au_headers_size = 2 + 2 * s->max_frames_per_packet;
 
     /* skip ADTS header, if present */
     if ((s1->streams[0]->codec->extradata_size) == 0) {
@@ -39,7 +38,7 @@ void ff_rtp_send_aac(AVFormatContext *s1, const uint8_t *buff, int size)
 
     /* test if the packet must be sent */
     len = (s->buf_ptr - s->buf);
-    if ((s->num_frames == max_frames_per_packet) || (s->num_frames && (len + size) > s->max_payload_size)) {
+    if ((s->num_frames == s->max_frames_per_packet) || (s->num_frames && (len + size) > s->max_payload_size)) {
         int au_size = s->num_frames * 2;
 
         p = s->buf + max_au_headers_size - au_size - 2;