diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 79c4071bad..651b1b5325 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -627,7 +627,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
 #if FF_API_PRIVATE_OPT
     FF_DISABLE_DEPRECATION_WARNINGS
     if (avctx->mpeg_quant)
-        s->mpeg_quant = avctx->mpeg_quant;
+        s->mpeg_quant = 1;
     FF_ENABLE_DEPRECATION_WARNINGS
 #endif