diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index a4e3767..81d23d3 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -258,7 +258,7 @@
 static int acpi_smbus_hc_add(struct acpi_device *device)
 {
 	int status;
-	unsigned long val;
+	unsigned long long val;
 	struct acpi_smb_hc *hc;
 
 	if (!device)