diff --git a/src/handshake/headers.rs b/src/handshake/headers.rs
index b5a9f62..dff0782 100644
--- a/src/handshake/headers.rs
+++ b/src/handshake/headers.rs
@@ -1,6 +1,5 @@
 //! HTTP Request and response header handling.
 
-use std::ascii::AsciiExt;
 use std::str::from_utf8;
 use std::slice;