diff --git a/builder/assets/hardware_setup.sh b/builder/assets/hardware_setup.sh
index 43ec396e..bfd2e153 100755
--- a/builder/assets/hardware_setup.sh
+++ b/builder/assets/hardware_setup.sh
@@ -37,8 +37,8 @@ echo "--- Enable UART"
 # Temporary solution
 # https://github.com/RPi-Distro/raspi-config/pull/75
 /usr/bin/raspi-config nonint do_serial 1
-/usr/bin/raspi-config nonint set_config_var enable_uart 1 /boot/config.txt
-echo dtoverlay=pi3-disable-bt >> /boot/config.txt
+/usr/bin/raspi-config nonint set_config_var enable_uart 1 /boot/firmware/config.txt
+echo dtoverlay=pi3-disable-bt >> /boot/firmware/config.txt
 systemctl disable hciuart.service
 
 # After adding to Raspbian OS