diff --git a/src/mainboard/lenovo/t420/devicetree.cb b/src/mainboard/lenovo/t420/devicetree.cb
index 5ac9cf5..ef40fc4 100644
--- a/src/mainboard/lenovo/t420/devicetree.cb
+++ b/src/mainboard/lenovo/t420/devicetree.cb
@@ -6,7 +6,7 @@
 	register "gpu_dp_d_hotplug" = "0x06"
 
 	# Enable Panel as LVDS and configure power delays
-	register "gpu_panel_port_select" = "0"			# LVDS
+	register "gpu_panel_port_select" = "PANEL_PORT_LVDS"
 	register "gpu_panel_power_cycle_delay" = "1"
 	register "gpu_panel_power_up_delay" = "300"		# T1+T2: 30ms
 	register "gpu_panel_power_down_delay" = "300"		# T5+T6: 30ms