diff --git a/uloop.c b/uloop.c
index c2a7b3e..f60eb41 100644
--- a/uloop.c
+++ b/uloop.c
@@ -121,7 +121,7 @@ static void uloop_run_events(int timeout)
 
 	if (timeout > 0) {
 		ts.tv_sec = timeout / 1000;
-		ts.tv_nsec = timeout * 1000000;
+		ts.tv_nsec = (timeout % 1000) * 1000000;
 	}
 
 	nfds = kevent(poll_fd, NULL, 0, events, ARRAY_SIZE(events), timeout > 0 ? &ts : NULL);