diff --git a/check_systemd_unit b/check_systemd_unit
index 74844ea..85a108a 100755
--- a/check_systemd_unit
+++ b/check_systemd_unit
@@ -37,7 +37,7 @@ else
 			;;
 		3)
 			# In this case, the unit is not running. Whether this is an issue depends on the type of service
-			if systemctl cat backup | grep -ie '^Type=' | grep -ie 'oneshot' > /dev/null 2>&1; then
+			if systemctl cat "$service" | grep -ie '^Type=' | grep -ie 'oneshot' > /dev/null 2>&1; then
 				echo "UNIT OK - $service is type oneshot and not running"
 				exit 0
 			else