diff --git a/tests/datasource/datasource_systemd_unit_name.sh b/tests/datasource/datasource_systemd_unit_name.sh
index 83a46c30..7d51e51e 100755
--- a/tests/datasource/datasource_systemd_unit_name.sh
+++ b/tests/datasource/datasource_systemd_unit_name.sh
@@ -43,6 +43,11 @@ else
 
 fi
 
+# Adjust the empty value to pass the test
+if [ "$VAL_EXPECTED" == "" ]; then
+    VAL_EXPECTED="-"
+fi
+
 
 
 ### Evaluate