diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 3c7d8942f23b..b0de6312919a 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -903,7 +903,7 @@ static struct acpi_driver acpi_battery_driver = {
 		},
 };
 
-static void acpi_battery_init_async(void *unused, async_cookie_t cookie)
+static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie)
 {
 	if (acpi_disabled)
 		return;