diff --git a/boot/config-4-800x480.txt b/boot/config-4-800x480.txt
index 8f6e97c..1657322 100755
--- a/boot/config-4-800x480.txt
+++ b/boot/config-4-800x480.txt
@@ -57,7 +57,7 @@ dtparam=audio=on
 hdmi_group=2
 hdmi_mode=1
 hdmi_mode=87
-hdmi_cvt 480 800 60 6 0 0 0
+hdmi_timings=480 0 40 10 80 800 0 13 3 32 0 0 0 60 0 32000000 3
 dtoverlay=ads7846,cs=1,penirq=25,penirq_pull=2,speed=50000,keep_vref_on=0,swapxy=0,pmax=255,xohms=150,xmin=200,xmax=3900,ymin=200,ymax=3900
 display_rotate=3
 hdmi_drive=1