diff --git a/kernel/src/arch/riscv/lowlevel.rs b/kernel/src/arch/riscv/lowlevel.rs
index 0414cdf..487a674 100644
--- a/kernel/src/arch/riscv/lowlevel.rs
+++ b/kernel/src/arch/riscv/lowlevel.rs
@@ -1,4 +1,4 @@
-use log::error;
+use log::{error, warn};
 
 use crate::plat::lowlevel::{Hardware, LowLevel};
 
@@ -20,6 +20,7 @@ impl LowLevel for Hardware {
     fn shutdown(failure: bool) -> ! {
         Self::disable_interrupt();
         ArchLL::board_shutdown(failure);
+        error!("[riscv/lowlevel] shutdown failed, halt instead");
         loop {
             // in case system_reset failed
             Self::halt()
@@ -29,7 +30,7 @@ impl LowLevel for Hardware {
     #[inline]
     fn reset(failure: bool) -> ! {
         ArchLL::board_reset(failure);
-        error!("[riscv/lowlevel] system_reset failed, shutdown instead");
+        error!("[riscv/lowlevel] reset failed, shutdown instead");
         Self::shutdown(true);
     }