diff --git a/drivers/hwmon/ams/ams-input.c b/drivers/hwmon/ams/ams-input.c
index f126aa485134..18210164e307 100644
--- a/drivers/hwmon/ams/ams-input.c
+++ b/drivers/hwmon/ams/ams-input.c
@@ -153,7 +153,7 @@ int ams_input_init(void)
 }
 
 /* Call with ams_info.lock held! */
-void ams_input_exit()
+void ams_input_exit(void)
 {
 	ams_input_disable();
 	device_remove_file(&ams_info.of_dev->dev, &dev_attr_joystick);