diff --git a/check-systemctl-service.sh b/check-systemctl-service.sh
index 21da0eb..b27fe44 100644
--- a/check-systemctl-service.sh
+++ b/check-systemctl-service.sh
@@ -69,6 +69,8 @@ GetOptions() {
 user=''
 service=''
 LC_NUMERIC="C"
+script_name=$(basename "${0}")
+script_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 GetOptions "$@"
 
 if [[ $(systemctl ${user} list-unit-files "${service}*" | wc -l) -gt 3 ]]; then