diff --git a/setup/pi/setup-teslausb b/setup/pi/setup-teslausb
index ba2468d..611fb0b 100644
--- a/setup/pi/setup-teslausb
+++ b/setup/pi/setup-teslausb
@@ -191,6 +191,9 @@ function make_root_fs_readonly () {
   /tmp/make-root-fs-readonly.sh
 }
 
+export -f setup_progress
+export HEADLESS_SETUP
+
 headless_setup_populate_variables
 
 # If USE_LED_FOR_SETUP_PROGRESS = true.