diff --git a/epoll.go b/epoll.go
index b276d02..a0f0608 100644
--- a/epoll.go
+++ b/epoll.go
@@ -40,16 +40,15 @@ type poll struct {
 }
 
 func openPoll() (*poll, error) {
+	ep := new(poll)
 	fd, err := syscall.EpollCreate1(0)
 	if err != nil {
 		return nil, err
 	}
-
-	return &poll{
-		fd:       fd,
-		fdEvents: make(map[int]*fdEvent),
-		events:   make([]syscall.EpollEvent, initialNEvent),
-	}, nil
+	ep.fd = fd
+	ep.fdEvents = make(map[int]*fdEvent, initialNEvent)
+	ep.events = make([]syscall.EpollEvent, initialNEvent)
+	return ep, nil
 }
 
 func (ep *poll) add(ev *Event) error {
diff --git a/event.go b/event.go
index 257f10f..16a16e5 100644
--- a/event.go
+++ b/event.go
@@ -275,6 +275,7 @@ func (bs *EventBase) handleActiveEvents() {
 		for e := bs.activeEvLists[i].front(); e != nil; {
 			next := e.nextEle()
 			ev := e.value
+			e = next
 			if ev.events&EvPersist != 0 {
 				bs.eventQueueRemove(ev, evListActive)
 				if ev.events&EvTimeout != 0 {
@@ -285,7 +286,6 @@ func (bs *EventBase) handleActiveEvents() {
 			} else {
 				bs.delEvent(ev)
 			}
-			e = next
 			ev.cb(ev.fd, ev.res, ev.arg)
 		}
 	}
diff --git a/kqueue.go b/kqueue.go
index e6ab083..ef7c75d 100644
--- a/kqueue.go
+++ b/kqueue.go
@@ -25,16 +25,15 @@ type poll struct {
 }
 
 func openPoll() (*poll, error) {
+	kq := new(poll)
 	fd, err := syscall.Kqueue()
 	if err != nil {
 		return nil, err
 	}
-
-	return &poll{
-		fd:      fd,
-		changes: make([]syscall.Kevent_t, initialNEvent),
-		events:  make([]syscall.Kevent_t, initialNEvent),
-	}, nil
+	kq.fd = fd
+	kq.changes = make([]syscall.Kevent_t, initialNEvent)
+	kq.events = make([]syscall.Kevent_t, initialNEvent)
+	return kq, nil
 }
 
 func (kq *poll) add(ev *Event) error {