diff --git a/start-configuration b/start-configuration
index 1cb1a387..1daf08d2 100644
--- a/start-configuration
+++ b/start-configuration
@@ -1,7 +1,12 @@
 #!/bin/bash
+set -euo pipefail
+IFS=$'\n\t'
 
 . ${SCRIPTS:-/}start-utils
 
+: ${PROXY:=}
+: ${RCON_PASSWORD_FILE:=}
+
 shopt -s nullglob
 
 #umask 002