diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c
index 6e2facf34bfa..c9641b6ccc8f 100644
--- a/io_uring/kbuf.c
+++ b/io_uring/kbuf.c
@@ -204,7 +204,7 @@ static struct io_br_sel io_ring_buffer_select(struct io_kiocb *req, size_t *len,
 	if (unlikely(tail == head))
 		return sel;
 
-	if (head + 1 == tail)
+	if ((__u16)(head + 1) == tail)
 		req->flags |= REQ_F_BL_EMPTY;
 
 	buf = io_ring_head_to_buf(br, head, bl->mask);