diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
index 6998b5b54141..3d8b20bcd21a 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -355,7 +355,7 @@ static struct platform_device *crag6410_devices[] __initdata = {
 
 static struct pca953x_platform_data crag6410_pca_data = {
 	.gpio_base	= PCA935X_GPIO_BASE,
-	.irq_base	= 0,
+	.irq_base	= -1,
 };
 
 /* VDDARM is controlled by DVS1 connected to GPK(0) */