diff --git a/libavcodec/cbs_av1_syntax_template.c b/libavcodec/cbs_av1_syntax_template.c
index 0855f7306f..a315e8868a 100644
--- a/libavcodec/cbs_av1_syntax_template.c
+++ b/libavcodec/cbs_av1_syntax_template.c
@@ -1609,8 +1609,6 @@ static int FUNC(frame_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
         else
             HEADER("Frame Header");
 
-        priv->seen_frame_header = 1;
-
 #ifdef READ
         start_pos = get_bits_count(rw);
 #else