diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index aa85690e9b6416b797db8129c8f1cbd7606bf687..f58a49769bc6be706fc5335658407f49aa1276dc 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -84,12 +84,8 @@ flat_send_IPI_mask_allbutself(const struct cpumask *cpumask, int vector)
 static void flat_send_IPI_allbutself(int vector)
 {
 	int cpu = smp_processor_id();
-#ifdef	CONFIG_HOTPLUG_CPU
-	int hotplug = 1;
-#else
-	int hotplug = 0;
-#endif
-	if (hotplug || vector == NMI_VECTOR) {
+
+	if (IS_ENABLED(CONFIG_HOTPLUG_CPU) || vector == NMI_VECTOR) {
 		if (!cpumask_equal(cpu_online_mask, cpumask_of(cpu))) {
 			unsigned long mask = cpumask_bits(cpu_online_mask)[0];