diff --git a/libavcodec/h2645_sei.c b/libavcodec/h2645_sei.c
index 04432b6a8d..f3ce3da9eb 100644
--- a/libavcodec/h2645_sei.c
+++ b/libavcodec/h2645_sei.c
@@ -539,6 +539,7 @@ int ff_h2645_sei_ctx_replace(H2645SEI *dst, const H2645SEI *src)
     }
     dst->aom_film_grain.enable = src->aom_film_grain.enable;
 
+    dst->ambient_viewing_environment = src->ambient_viewing_environment;
     dst->mastering_display     = src->mastering_display;
     dst->content_light         = src->content_light;