diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 6aa41b5538f2aa9de0e193f675fc4b711a68fe0d..e9e69ac72441c4405a657f7ac7de297142d6e00a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2858,7 +2858,7 @@ int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
  * @param[in] buf_size the size of the output buffer in bytes
  * @param[in] pict the input picture to encode
  * @return On error a negative value is returned, on success zero or the number
- * of bytes used from the input buffer.
+ * of bytes used from the output buffer.
  */
 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
                          const AVFrame *pict);