diff --git a/library/core/src/ffi/c_str.rs b/library/core/src/ffi/c_str.rs
index 97831c41dc0f..c2d6f7b235a5 100644
--- a/library/core/src/ffi/c_str.rs
+++ b/library/core/src/ffi/c_str.rs
@@ -155,7 +155,7 @@ impl Error for FromBytesWithNulError {}
 /// within the slice.
 ///
 /// This error is created by the [`CStr::from_bytes_until_nul`] method.
-#[derive(Clone, PartialEq, Eq, Debug)]
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
 #[stable(feature = "cstr_from_bytes_until_nul", since = "1.69.0")]
 pub struct FromBytesUntilNulError(());