diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c
index fcd97a1..36e94fa 100644
--- a/x86/vmx_tests.c
+++ b/x86/vmx_tests.c
@@ -8544,7 +8544,7 @@
 	 * an event that you injected.
 	 */
 	vmx_set_test_stage(1);
-	vmx_preemption_timer_zero_inject_db(1 << DB_VECTOR);
+	vmx_preemption_timer_zero_inject_db(true);
 	vmx_preemption_timer_zero_expect_preempt_at_rip(db_fault_address);
 	vmx_preemption_timer_zero_advance_past_vmcall();