diff --git a/io_uring/opdef.c b/io_uring/opdef.c
index 517bad015505..88a45c7d897f 100644
--- a/io_uring/opdef.c
+++ b/io_uring/opdef.c
@@ -515,7 +515,6 @@ const struct io_issue_def io_issue_defs[] = {
 		.needs_file		= 1,
 		.prep			= io_listen_prep,
 		.issue			= io_listen,
-		.async_size		= sizeof(struct io_async_msghdr),
 #else
 		.prep			= io_eopnotsupp_prep,
 #endif