diff --git a/tools/setup_buildenv_ubuntu20.04.sh b/tools/setup_buildenv_ubuntu20.04.sh
index ed97c0594..fee859a2e 100644
--- a/tools/setup_buildenv_ubuntu20.04.sh
+++ b/tools/setup_buildenv_ubuntu20.04.sh
@@ -1,6 +1,6 @@
 #! /usr/bin/env bash
 
-set -x
+set -e
 
 ## Bash script to setup EdgeTX v2.4 development environment on Ubuntu 20.04 running on bare-metal or in a virtual machine.
 ## Does NOT work with WSL/WSL2 under Windows 10!