diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index 85c0183..f4c20b0 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -4064,8 +4064,9 @@
 
   // The TD is now written outside the frame encode loop
 
-  // write sequence header obu if KEY_FRAME, preceded by 4-byte size
-  if (cm->current_frame.frame_type == KEY_FRAME && !cpi->no_show_fwd_kf) {
+  // write sequence header obu at each key frame, preceded by 4-byte size
+  if (cm->current_frame.frame_type == KEY_FRAME &&
+      cpi->ppi->gf_group.refbuf_state[cpi->gf_frame_index] == REFBUF_RESET) {
     obu_header_size = av1_write_obu_header(
         level_params, &cpi->frame_header_count, OBU_SEQUENCE_HEADER, 0, data);