diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 488793b119d0..f39d66589180 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -819,6 +819,14 @@ bool io_post_aux_cqe(struct io_ring_ctx *ctx,
 {
 	bool filled;
 
+	/*
+	 * If multishot has already posted deferred completions, ensure that
+	 * those are flushed first before posting this one. If not, CQEs
+	 * could get reordered.
+	 */
+	if (!wq_list_empty(&ctx->submit_state.compl_reqs))
+		__io_submit_flush_completions(ctx);
+
 	io_cq_lock(ctx);
 	filled = io_fill_cqe_aux(ctx, user_data, res, cflags, allow_overflow);
 	io_cq_unlock_post(ctx);