diff --git a/boot-sms.sh b/boot-sms.sh
index dbeeaaa..7a978d7 100755
--- a/boot-sms.sh
+++ b/boot-sms.sh
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 
+run_directory=$(dirname "$0")
 source "$run_directory/variables.conf"
 
 # Set parameters here