--- old/test/hotspot/jtreg/runtime/appcds/CommandLineFlagCombo.java	2018-10-03 06:08:10.141373899 +0100
+++ new/test/hotspot/jtreg/runtime/appcds/CommandLineFlagCombo.java	2018-10-03 06:08:09.678330542 +0100
@@ -24,7 +24,10 @@
 
 /*
  * @test CommandLineFlagCombo
- * @requires vm.cds
+ * @requires vm.cds.archived.java.heap
+ * @comment This test explicitly chooses the type of GC to be used by sub-processes. It may conflict with the GC type set
+ * via the -vmoptions command line option of JTREG. vm.gc==null will help the test case to discard the explicitly passed
+ * vm options.
  * @requires (vm.gc=="null")
  * @summary Test command line flag combinations that
  *          could likely affect the behaviour of AppCDS