diff --git a/src/soc/intel/apollolake/acpi.c b/src/soc/intel/apollolake/acpi.c
index fbfe33f..93c8792 100644
--- a/src/soc/intel/apollolake/acpi.c
+++ b/src/soc/intel/apollolake/acpi.c
@@ -225,7 +225,7 @@
 	return current;
 }
 
-unsigned long sa_write_acpi_tables(struct device *const dev,
+unsigned long sa_write_acpi_tables(const struct device *const dev,
 				     unsigned long current,
 				     struct acpi_rsdp *const rsdp)
 {