diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index f0d936b..86c7d54 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -75,7 +75,7 @@
 MODULE_DEVICE_TABLE(acpi, button_device_ids);
 
 static int acpi_button_add(struct acpi_device *device);
-static int acpi_button_remove(struct acpi_device *device, int type);
+static int acpi_button_remove(struct acpi_device *device);
 static void acpi_button_notify(struct acpi_device *device, u32 event);
 
 #ifdef CONFIG_PM_SLEEP
@@ -433,7 +433,7 @@
 	return error;
 }
 
-static int acpi_button_remove(struct acpi_device *device, int type)
+static int acpi_button_remove(struct acpi_device *device)
 {
 	struct acpi_button *button = acpi_driver_data(device);