diff --git a/epoll.c b/epoll.c
index 91f0544b99..2d07ff6231 100644
--- a/epoll.c
+++ b/epoll.c
@@ -182,6 +182,7 @@ epoll_init(struct event_base *base)
 		fd = epollop->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
 		if (epollop->timerfd >= 0) {
 			struct epoll_event epev;
+			memset(&epev, 0, sizeof(epev));
 			epev.data.fd = epollop->timerfd;
 			epev.events = EPOLLIN;
 			if (epoll_ctl(epollop->epfd, EPOLL_CTL_ADD, fd, &epev) < 0) {