diff --git a/sysupgrade/amd64/sysup_efi b/sysupgrade/amd64/sysup_efi
index 181fd58..f11b639 100644
--- a/sysupgrade/amd64/sysup_efi
+++ b/sysupgrade/amd64/sysup_efi
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+## Dangerous! this operation does not allow normal users to bypass cattools!
+
 AMD64_EFI_SYSUP="https://github.com/miaoermua/CatWrt/releases/download/v23.8/CatWrt.v23.8.x86_64-squashfs-combined-efi.img.gz"
 
 sysupgrade -v $AMD64_EFI_SYSUP