diff --git a/src/error.rs b/src/error.rs
index 7f92cfe..5a8dd16 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -10,7 +10,7 @@ use client::response::{FromResponse, ParseError, JsonHelper};
 /// OAuth 2.0 error codes.
 ///
 /// See [RFC 6749, section 5.2](http://tools.ietf.org/html/rfc6749#section-5.2).
-#[derive(Debug)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum OAuth2ErrorCode {
     /// The request is missing a required parameter, includes an unsupported parameter value (other
     /// than grant type), repeats a parameter, includes multiple credentials, utilizes more than
@@ -57,7 +57,7 @@ impl<'a> From<&'a str> for OAuth2ErrorCode {
 /// OAuth 2.0 error.
 ///
 /// See [RFC 6749, section 5.2](http://tools.ietf.org/html/rfc6749#section-5.2).
-#[derive(Debug)]
+#[derive(Debug, PartialEq, Eq)]
 pub struct OAuth2Error {
     /// Error code.
     pub code: OAuth2ErrorCode,