diff --git a/src/lib.rs b/src/lib.rs
index ff24d5b..e0179ad 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -289,7 +289,7 @@ deprecated_checked_conversion! {
     /// [`OsStrExt`]: ::std::os::unix::ffi::OsStrExt
     /// [`OsStringExt`]: ::std::os::unix::ffi::OsStringExt
     /// [`Result::unwrap`]: ::std::result::Result::unwrap
-    #[derive(Debug, Eq, PartialEq)]
+    #[derive(Clone, Debug, Eq, PartialEq)]
     #[cfg_attr(
         os_str_bytes_docs_rs,
         doc(cfg(feature = "checked_conversions"))
diff --git a/src/wasm/mod.rs b/src/wasm/mod.rs
index 82eb548..a8a2996 100644
--- a/src/wasm/mod.rs
+++ b/src/wasm/mod.rs
@@ -13,7 +13,7 @@ if_raw_str! {
     pub(super) mod raw;
 }
 
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub(super) struct EncodingError(Utf8Error);
 
 impl Display for EncodingError {
diff --git a/src/windows/mod.rs b/src/windows/mod.rs
index a221a52..2f44119 100644
--- a/src/windows/mod.rs
+++ b/src/windows/mod.rs
@@ -24,7 +24,7 @@ use wtf8::DecodeWide;
 #[cfg(test)]
 mod tests;
 
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub(super) enum EncodingError {
     Byte(u8),
     CodePoint(u32),