--- old/test/hotspot/jtreg/gc/TestFullGCCount.java	2018-12-03 17:46:15.444921421 +0100
+++ new/test/hotspot/jtreg/gc/TestFullGCCount.java	2018-12-03 17:46:15.298922464 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,7 +25,9 @@
  * @test TestFullGCCount.java
  * @bug 7072527
  * @summary CMS: JMM GC counters overcount in some cases
- * @requires !(vm.gc.ConcMarkSweep & vm.opt.ExplicitGCInvokesConcurrent == true)
+ * @requires !(vm.gc == "ConcMarkSweep" & vm.opt.ExplicitGCInvokesConcurrent == true)
+ * @comment Shenandoah has "ExplicitGCInvokesConcurrent" on by default
+ * @requires !(vm.gc == "Shenandoah"    & vm.opt.ExplicitGCInvokesConcurrent != false)
  * @modules java.management
  * @run main/othervm -Xlog:gc TestFullGCCount
  */