diff --git a/compiler/rustc_codegen_llvm/src/back/archive.rs b/compiler/rustc_codegen_llvm/src/back/archive.rs
index a82d2c5771a35..f33075a887963 100644
--- a/compiler/rustc_codegen_llvm/src/back/archive.rs
+++ b/compiler/rustc_codegen_llvm/src/back/archive.rs
@@ -367,7 +367,7 @@ impl<'a> LlvmArchiveBuilder<'a> {
                 match addition {
                     Addition::File { path, name_in_archive } => {
                         let path = CString::new(path.to_str().unwrap())?;
-                        let name = CString::new(name_in_archive.clone())?;
+                        let name = CString::new(name_in_archive.as_bytes())?;
                         members.push(llvm::LLVMRustArchiveMemberNew(
                             path.as_ptr(),
                             name.as_ptr(),
diff --git a/compiler/rustc_codegen_llvm/src/back/lto.rs b/compiler/rustc_codegen_llvm/src/back/lto.rs
index b2d28cef89976..c1d3392386cad 100644
--- a/compiler/rustc_codegen_llvm/src/back/lto.rs
+++ b/compiler/rustc_codegen_llvm/src/back/lto.rs
@@ -441,7 +441,7 @@ fn thin_lto(
 
         for (i, (name, buffer)) in modules.into_iter().enumerate() {
             info!("local module: {} - {}", i, name);
-            let cname = CString::new(name.clone()).unwrap();
+            let cname = CString::new(name.as_bytes()).unwrap();
             thin_modules.push(llvm::ThinLTOModule {
                 identifier: cname.as_ptr(),
                 data: buffer.data().as_ptr(),