diff --git a/gst-libs/gst/video/gstvideodecoder.c b/gst-libs/gst/video/gstvideodecoder.c
index 8730a3e3d0..e677b92e77 100644
--- a/gst-libs/gst/video/gstvideodecoder.c
+++ b/gst-libs/gst/video/gstvideodecoder.c
@@ -2056,7 +2056,7 @@ done:
 /**
  * gst_video_decoder_add_to_frame:
  * @decoder: a #GstVideoDecoder
- * @n_bytes: an encoded #GstVideoCodecFrame
+ * @n_bytes: the number of bytes to add
  *
  * Removes next @n_bytes of input data and adds it to currently parsed frame.
  *