diff --git a/boot/config-7B-800x480.txt b/boot/config-7B-800x480.txt
index 9760f4c..d697e12 100644
--- a/boot/config-7B-800x480.txt
+++ b/boot/config-7B-800x480.txt
@@ -58,5 +58,6 @@ max_usb_current=1
 hdmi_group=2
 hdmi_mode=1
 hdmi_mode=87
+hdmi_drive=1
 hdmi_cvt 800 480 60 6 0 0 0
 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