diff --git a/xtask/src/run.rs b/xtask/src/run.rs
index 770de67e..29a978b8 100644
--- a/xtask/src/run.rs
+++ b/xtask/src/run.rs
@@ -350,11 +350,14 @@ pub fn run(opts: Options) -> Result<()> {
                         .replace("vmlinuz-", "config-"),
                 );
                 if config_path.exists() {
+                    let mut destination = PathBuf::from("/boot/");
+                    destination.set_file_name(config_path.file_name().expect("filename"));
                     for bytes in [
-                        "file /boot/".as_bytes(),
+                        "dir /boot 0755 0 0\n".as_bytes(),
+                        "file ".as_bytes(),
                         config_path.as_os_str().as_bytes(),
                         " ".as_bytes(),
-                        config_path.as_os_str().as_bytes(),
+                        destination.as_os_str().as_bytes(),
                         " 0755 0 0\n".as_bytes(),
                     ] {
                         stdin.write_all(bytes).expect("write");