diff --git a/src/drivers/pc80/tpm/tpm.c b/src/drivers/pc80/tpm/tpm.c
index e9730a9..c0afd4c 100644
--- a/src/drivers/pc80/tpm/tpm.c
+++ b/src/drivers/pc80/tpm/tpm.c
@@ -988,7 +988,7 @@
 	       dev->chip_ops->name, dev_path(dev));
 }
 
-static const char *lpc_tpm_acpi_name(struct device *dev)
+static const char *lpc_tpm_acpi_name(const struct device *dev)
 {
 	return "TPM";
 }