diff --git a/libavcodec/frame_thread_encoder.c b/libavcodec/frame_thread_encoder.c
index 5d14442c01..b3e571f4b0 100644
--- a/libavcodec/frame_thread_encoder.c
+++ b/libavcodec/frame_thread_encoder.c
@@ -215,8 +215,6 @@ int ff_frame_thread_encoder_init(AVCodecContext *avctx)
             int ret = av_opt_copy(thread_avctx->priv_data, avctx->priv_data);
             if (ret < 0)
                 goto fail;
-        } else if (avctx->codec->priv_data_size) {
-            memcpy(thread_avctx->priv_data, avctx->priv_data, avctx->codec->priv_data_size);
         }
         thread_avctx->thread_count = 1;
         thread_avctx->active_thread_type &= ~FF_THREAD_FRAME;