2 files changed, 2 insertions, 2 deletions
diff --git a/src/libserialize/hex.rs b/src/libserialize/hex.rs
index dc44536d60c..0676edf8169 100644
--- a/src/libserialize/hex.rs
+++ b/src/libserialize/hex.rs
@@ -62,7 +62,7 @@ pub trait FromHex {
 }
 
 /// Errors that can occur when decoding a hex encoded string
-#[derive(Copy, Debug)]
+#[derive(Copy, Clone, Debug)]
 pub enum FromHexError {
     /// The input contained a character not part of the hex format
     InvalidHexCharacter(char, usize),
diff --git a/src/libserialize/json.rs b/src/libserialize/json.rs
index cdfe212bf23..5890bdec8c1 100644
--- a/src/libserialize/json.rs
+++ b/src/libserialize/json.rs
@@ -278,7 +278,7 @@ pub enum DecoderError {
     ApplicationError(string::String)
 }
 
-#[derive(Copy, Debug)]
+#[derive(Copy, Clone, Debug)]
 pub enum EncoderError {
     FmtError(fmt::Error),
     BadHashmapKey,