diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 44b55f8..6a07bce 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -1254,13 +1254,12 @@ static unsigned int startup_ioapic_irq(u
 static int ioapic_retrigger_irq(unsigned int irq)
 {
 	cpumask_t mask;
-	unsigned vector;
+	int vector;
 
 	vector = irq_vector[irq];
-	cpus_clear(mask);
-	cpu_set(vector >> 8, mask);
+	mask = irq_domain[irq];
 
-	send_IPI_mask(mask, vector & 0xff);
+	send_IPI_mask(mask, vector);
 
 	return 1;
 }