diff --git a/src/skel b/src/skel
index 616ed34..26ee66c 100644
--- a/src/skel
+++ b/src/skel
@@ -29,6 +29,7 @@ check_config() {
 
 # Source Root Dir Parameter
 if [ -r /etc/default/cis-hardening ]; then
+    # shellcheck source=../../debian/default
     . /etc/default/cis-hardening
 fi
 if [ -z "$CIS_ROOT_DIR" ]; then
@@ -38,5 +39,11 @@ if [ -z "$CIS_ROOT_DIR" ]; then
 fi
 
 # Main function, will call the proper functions given the configuration (audit, enabled, disabled)
-[ -r "$CIS_ROOT_DIR"/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh
+if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
+    # shellcheck source=../../lib/main.sh
+    . "$CIS_ROOT_DIR"/lib/main.sh
+else
+    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
+    exit 128
+fi