diff --git a/arch/powerpc/boot/dts/mpc8610_hpcd.dts b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
index 1f2f1e0a5571..255dfefc2d6d 100644
--- a/arch/powerpc/boot/dts/mpc8610_hpcd.dts
+++ b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
@@ -105,7 +105,7 @@ serial1: serial@4600 {
 			compatible = "ns16550";
 			reg = <0x4600 0x100>;
 			clock-frequency = <0>;
-			interrupts = <28 2>;
+			interrupts = <42 2>;
 			interrupt-parent = <&mpic>;
 		};