diff --git a/libavutil/frame.h b/libavutil/frame.h
index 6d9563bc5d..e60a82f6c0 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -864,6 +864,7 @@ int av_frame_copy_props(AVFrame *dst, const AVFrame *src);
 /**
  * Get the buffer reference a given data plane is stored in.
  *
+ * @param frame the frame to get the plane's buffer from
  * @param plane index of the data plane of interest in frame->extended_data.
  *
  * @return the buffer reference that contains the plane or NULL if the input