diff --git a/tests/stack_overflow.rs b/tests/stack_overflow.rs
index 056bae5..b94a178 100644
--- a/tests/stack_overflow.rs
+++ b/tests/stack_overflow.rs
@@ -49,7 +49,7 @@ use xe_os::{exit_qemu, serial_println, QemuExitCode};
 extern "x86-interrupt" fn test_double_fault_handler(
     _stack_frame: &mut InterruptStackFrame,
     _error_code: u64,
-) {
+) -> ! {
     serial_println!("[ok]");
     exit_qemu(QemuExitCode::Success);
     loop {}