diff --git a/drivers/macintosh/ams/ams-core.c b/drivers/macintosh/ams/ams-core.c
index 877e8cb23128..c978b4272daa 100644
--- a/drivers/macintosh/ams/ams-core.c
+++ b/drivers/macintosh/ams/ams-core.c
@@ -176,7 +176,7 @@ int ams_sensor_attach(void)
 	return result;
 }
 
-int __init ams_init(void)
+static int __init ams_init(void)
 {
 	struct device_node *np;