diff --git a/src/event.rs b/src/event.rs
index d3152b45a..accc19c1d 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -74,6 +74,7 @@
 
 use std::fmt;
 use std::hash::{Hash, Hasher};
+use std::io;
 use std::time::Duration;
 
 use bitflags::bitflags;