diff --git a/gst-libs/gst/rtp/gstrtpbaseaudiopayload.c b/gst-libs/gst/rtp/gstrtpbaseaudiopayload.c
index 3c25b61176..83d933be26 100644
--- a/gst-libs/gst/rtp/gstrtpbaseaudiopayload.c
+++ b/gst-libs/gst/rtp/gstrtpbaseaudiopayload.c
@@ -980,7 +980,7 @@ gst_rtp_base_payload_audio_sink_event (GstRTPBasePayload * basep,
  *
  * Gets the internal adapter used by the depayloader.
  *
- * Returns: a #GstAdapter.
+ * Returns: (transfer full): a #GstAdapter.
  */
 GstAdapter *
 gst_rtp_base_audio_payload_get_adapter (GstRTPBaseAudioPayload