diff --git a/blockdev.c b/blockdev.c
index efd184f..364b453 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1257,7 +1257,6 @@
  * @node: The name of the BDS node to search for bitmaps
  * @name: The name of the bitmap to search for
  * @pbs: Output pointer for BDS lookup, if desired. Can be NULL.
- * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL.
  * @errp: Output pointer for error information. Can be NULL.
  *
  * @return: A bitmap object on success, or NULL on failure.