diff --git a/backend.py b/backend.py
index efa6ae4..6b00b92 100644
--- a/backend.py
+++ b/backend.py
@@ -1340,7 +1340,7 @@ def _manual_install_efi_files(mount_point: str, efi_target: str, efi_grub_file:
             modules = "part_gpt part_msdos fat ext2 xfs btrfs normal boot linux configfile search search_fs_uuid search_fs_file"
             
             # 构建 chroot 内的输出路径
-            chroot_output_path = f"/boot/efi/EFI/{efi_bootloader_id}/{efi_grub_file}"
+            chroot_output_path = f"/boot/efi/EFI/{bootloader_id}/{efi_grub_file}"
             
             # 尝试使用 grub-mkimage 生成 EFI 文件
             chroot_cmd_prefix = ["sudo", "chroot", mount_point]