diff --git a/monoio/src/driver/iocp/event.rs b/monoio/src/driver/iocp/event.rs
index 1072d7b8..b7f0e045 100644
--- a/monoio/src/driver/iocp/event.rs
+++ b/monoio/src/driver/iocp/event.rs
@@ -131,7 +131,7 @@ impl Events {
 
 impl<'a> IntoIterator for &'a Events {
     type Item = &'a Event;
-    type IntoIter = Iter<'a>;
+    type IntoIter = Iter<'a, Event>;
 
     fn into_iter(self) -> Self::IntoIter {
         self.iter()
@@ -140,7 +140,7 @@ impl<'a> IntoIterator for &'a Events {
 
 impl<'a> IntoIterator for &'a mut Events {
     type Item = &'a mut Event;
-    type IntoIter = Iter<'a>;
+    type IntoIter = IterMut<'a, Event>;
 
     fn into_iter(self) -> Self::IntoIter {
         self.iter_mut()