diff --git a/serde/src/de/mod.rs b/serde/src/de/mod.rs
index e6c22788..c54726bd 100644
--- a/serde/src/de/mod.rs
+++ b/serde/src/de/mod.rs
@@ -40,7 +40,7 @@ pub trait Error: Sized + error::Error {
 
 /// `Type` represents all the primitive types that can be deserialized. This is used by
 /// `Error::kind_mismatch`.
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
 pub enum Type {
     /// Represents a `bool` type.
     Bool,
diff --git a/serde/src/de/value.rs b/serde/src/de/value.rs
index 8b5c3196..3f40f39e 100644
--- a/serde/src/de/value.rs
+++ b/serde/src/de/value.rs
@@ -55,10 +55,12 @@ impl de::Error for Error {
 impl fmt::Display for Error {
     fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
         match *self {
-            Error::SyntaxError => formatter.write_str("SyntaxError"),
-            Error::EndOfStreamError => formatter.write_str("EndOfStreamError"),
-            Error::UnknownFieldError(ref field) => formatter.write_str(format!("Unknown field: {}", field).as_ref()),
-            Error::MissingFieldError(ref field) => formatter.write_str(format!("Missing field: {}", field).as_ref()),
+            Error::Syntax(ref s) => write!(formatter, "Syntax error: {}", s),
+            Error::Type(ty) => write!(formatter, "Invalid type: {:?}", ty),
+            Error::Length(len) => write!(formatter, "Invalid length: {}", len),
+            Error::EndOfStream => formatter.write_str("EndOfStreamError"),
+            Error::UnknownField(ref field) => write!(formatter, "Unknown field: {}", field),
+            Error::MissingField(ref field) => write!(formatter, "Missing field: {}", field),
         }
     }
 }