diff --git a/src/drivers/pc80/tpm/tis.c b/src/drivers/pc80/tpm/tis.c
index 714b7e5..3549173 100644
--- a/src/drivers/pc80/tpm/tis.c
+++ b/src/drivers/pc80/tpm/tis.c
@@ -904,11 +904,13 @@
 	else
 		acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_OFF);
 
+	u16 port = dev->path.pnp.port;
+
 	/* Resources */
 	acpigen_write_name("_CRS");
 	acpigen_write_resourcetemplate_header();
 	acpigen_write_mem32fixed(1, CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000);
-	acpigen_write_io16(0x2e, 0x2e, 1, 2, 1);
+	acpigen_write_io16(port, port, 1, 2, 1);
 
 	if (CONFIG_TPM_PIRQ) {
 		/*