diff --git a/src/mailbox.rs b/src/mailbox.rs
index 9e2456a..f6bb375 100644
--- a/src/mailbox.rs
+++ b/src/mailbox.rs
@@ -1,6 +1,6 @@
 use std::fmt;
 
-#[derive(Clone, Debug, Eq, Ord, PartialEq, PartialOrd, Hash)]
+#[derive(Clone, Debug, Eq, PartialEq, Hash)]
 pub struct Mailbox {
     pub flags: String,
     pub exists: u32,
diff --git a/src/mock_stream.rs b/src/mock_stream.rs
index 81325dd..fdda020 100644
--- a/src/mock_stream.rs
+++ b/src/mock_stream.rs
@@ -1,7 +1,7 @@
 use std::io::{Error, ErrorKind, Read, Result, Write};
 use std::cmp::min;
 
-#[derive(Clone, Debug, Eq, Ord, PartialEq, PartialOrd, Hash)]
+#[derive(Clone, Debug, Eq, PartialEq, Hash)]
 pub struct MockStream {
     read_buf: Vec<u8>,
     read_pos: usize,