diff --git a/tests/check-ctrl-alt-del.sh b/tests/check-ctrl-alt-del.sh
index e6e06a5139cdd6601330c460ca41f0c5bbbef2c4..da58a57a3d3d8beeb084bda1e59bbf4f1ebc8725 100644
--- a/tests/check-ctrl-alt-del.sh
+++ b/tests/check-ctrl-alt-del.sh
@@ -2,7 +2,7 @@
 
 if [ -f /etc/systemd/system/ctrl-alt-del.target ];then
     ctrl_alt_del=$(ls -l /etc/systemd/system/ctrl-alt-del.target)
-    if [[ "$ctrl_alt_del" !=  *"/dev/null" ]]; then
+    if [[ "$ctrl_alt_del" !=  *'/dev/null' ]]; then
         exit 1
     fi
 else