diff -up ./ev_iouring.c.ori ./ev_iouring.c
--- ./ev_iouring.c.ori	2020-03-08 16:55:17.000000000 +0100
+++ ./ev_iouring.c	2025-01-21 09:46:51.408343981 +0100
@@ -313,7 +313,7 @@ iouring_tfd_cb (EV_P_ struct ev_io *w, i
 
 /* called for full and partial cleanup */
 ecb_cold
-static int
+static void
 iouring_internal_destroy (EV_P)
 {
   close (iouring_tfd);