diff --git a/src/lib.rs b/src/lib.rs
index 510d97ae..e6f810e1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -31,7 +31,7 @@ pub fn test_panic_handler(info: &PanicInfo) -> ! {
     serial_println!("[failed]\n");
     serial_println!("Error: {}\n", info);
     exit_qemu(QemuExitCode::Failed);
-    loop {}
+    hlt_loop();
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -56,7 +56,7 @@ pub fn exit_qemu(exit_code: QemuExitCode) {
 pub extern "C" fn _start() -> ! {
     init();
     test_main();
-    loop {}
+    hlt_loop();
 }
 
 #[cfg(test)]