diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 8fc7323ed3e8..4ed4061813e6 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -839,7 +839,7 @@ void acpi_penalize_isa_irq(int irq, int active)
 {
 	if ((irq >= 0) && (irq < ARRAY_SIZE(acpi_isa_irq_penalty)))
 		acpi_isa_irq_penalty[irq] = acpi_irq_get_penalty(irq) +
-			active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING;
+		  (active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING);
 }
 
 bool acpi_isa_irq_available(int irq)