diff --git a/src/ev_poll.c b/src/ev_poll.c
index f9e445113..610509bd6 100644
--- a/src/ev_poll.c
+++ b/src/ev_poll.c
@@ -205,7 +205,7 @@ REGPRM1 static int _do_init(struct poller *p)
 	int fd_evts_bytes;
 
 	p->private = NULL;
-	fd_evts_bytes = (global.maxsock + sizeof(**fd_evts) - 1) / sizeof(**fd_evts) * sizeof(**fd_evts);
+	fd_evts_bytes = (global.maxsock + sizeof(**fd_evts) * 8 - 1) / (sizeof(**fd_evts) * 8) * sizeof(**fd_evts);
 
 	if ((fd_evts[DIR_RD] = calloc(1, fd_evts_bytes)) == NULL)
 		goto fail_srevt;