diff --git a/target/linux/adm5120/files/arch/mips/adm5120/irq.c b/target/linux/adm5120/files/arch/mips/adm5120/irq.c
index 361dcb8628..ef7b9b92e3 100644
--- a/target/linux/adm5120/files/arch/mips/adm5120/irq.c
+++ b/target/linux/adm5120/files/arch/mips/adm5120/irq.c
@@ -109,9 +109,9 @@ static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type)
 	case ADM5120_IRQ_GPIO4:
 		mode = INTC_READ(INTC_REG_INT_MODE);
 		if (sense == IRQ_TYPE_LEVEL_LOW)
-			mode |= (1 << (irq-ADM5120_INTC_IRQ_BASE));
+			mode |= (1 << (3 + irq - ADM5120_IRQ_GPIO2));
 		else
-			mode &= (1 << (irq-ADM5120_INTC_IRQ_BASE));
+			mode &= (1 << (3 + irq - ADM5120_IRQ_GPIO2));
 
 		INTC_WRITE(INTC_REG_INT_MODE, mode);
 		/* fallthrough */