diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 55361686ef0439d4735589a070e20db2d691f3ae..7231b8dccbc6e612bddab3431a348fcac1112ce4 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -713,8 +713,10 @@ acpi_os_physical_table_override(struct acpi_table_header *existing_table,
 					  table_length);
 }
 
+#ifdef CONFIG_ACPI_CUSTOM_DSDT
 static void *amlcode __attribute__ ((weakref("AmlCode")));
 static void *dsdt_amlcode __attribute__ ((weakref("dsdt_aml_code")));
+#endif
 
 acpi_status
 acpi_os_table_override(struct acpi_table_header *existing_table,