diff --git a/drivers/acpi/acpi_dbg.c b/drivers/acpi/acpi_dbg.c
index 7a265c2171c0..6041974c7627 100644
--- a/drivers/acpi/acpi_dbg.c
+++ b/drivers/acpi/acpi_dbg.c
@@ -745,7 +745,7 @@ static const struct acpi_debugger_ops acpi_aml_debugger = {
 	.notify_command_complete = acpi_aml_notify_command_complete,
 };
 
-int __init acpi_aml_init(void)
+static int __init acpi_aml_init(void)
 {
 	int ret;
 
@@ -771,7 +771,7 @@ int __init acpi_aml_init(void)
 	return 0;
 }
 
-void __exit acpi_aml_exit(void)
+static void __exit acpi_aml_exit(void)
 {
 	if (acpi_aml_initialized) {
 		acpi_unregister_debugger(&acpi_aml_debugger);