diff --git a/src/event.rs b/src/event.rs
index f79cb4c1..6e383a1c 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -1,7 +1,6 @@
 //! Mouse and key events.
 
 use std::io::{Error, ErrorKind};
-use std::ascii::AsciiExt;
 use std::str;
 
 /// An event reported by the terminal.