diff --git a/src/opus_multistream_encoder.c b/src/opus_multistream_encoder.c
index bdacff1ab6d3ae83404b92ee14f480dd0a0739ed..3787194a999323a004ebe115e8e805c71a213f55 100644
--- a/src/opus_multistream_encoder.c
+++ b/src/opus_multistream_encoder.c
@@ -860,10 +860,10 @@ static int opus_multistream_encode_native
          opus_encoder_ctl(enc, OPUS_SET_ENERGY_MASK(bandLogE));
       /* number of bytes left (+Toc) */
       curr_max = max_data_bytes - tot_size;
-      /* Reserve three bytes for the last stream and four for the others */
+      /* Reserve one byte for the last stream and two for the others */
       curr_max -= IMAX(0,2*(st->layout.nb_streams-s-1)-1);
       curr_max = IMIN(curr_max,MS_FRAME_TMP);
-      /* Repacketizer will add one byte for self-delimited frames */
+      /* Repacketizer will add one or two bytes for self-delimited frames */
       if (s != st->layout.nb_streams-1) curr_max -=  curr_max>253 ? 2 : 1;
       if (!vbr && s == st->layout.nb_streams-1)
          opus_encoder_ctl(enc, OPUS_SET_BITRATE(curr_max*(8*Fs/frame_size)));