diff --git a/daemon/media_player.c b/daemon/media_player.c
index eef732f7f..93b74f06f 100644
--- a/daemon/media_player.c
+++ b/daemon/media_player.c
@@ -322,7 +322,7 @@ static void send_timer_rtcp(struct send_timer *st, struct ssrc_entry_call *ssrc_
 }
 
 struct async_send_req {
-	struct uring_req_sendmsg req; // must be first
+	struct uring_req_sendmsg req; // must be first, followed by iov
 	struct iovec iov;
 	void *buf;
 };
diff --git a/daemon/stun.c b/daemon/stun.c
index 1d474cdc1..7a2d92c48 100644
--- a/daemon/stun.c
+++ b/daemon/stun.c
@@ -664,9 +664,9 @@ ignore:
 }
 
 struct async_stun_req {
-	struct uring_req_sendmsg req; // must be first
-	struct header hdr;
+	struct uring_req_sendmsg req; // must be first, followed by iov
 	struct iovec iov[10]; /* hdr, username x2, ice_controlled/ing, priority, uc, fp, mi, sw x2 */
+	struct header hdr;
 	char username_buf[256];
 	struct generic un_attr;
 	struct controlled_ing cc;
diff --git a/lib/uring.h b/lib/uring.h
index b3435c0f8..c98009d27 100644
--- a/lib/uring.h
+++ b/lib/uring.h
@@ -17,6 +17,7 @@ struct uring_req_sendmsg {
 	struct uring_req req;
 	struct msghdr mh;
 	struct sockaddr_storage ss; // destination address
+	struct iovec iov[0]; // provided by outer container
 };
 
 struct uring_methods {