--- old/test/jdk/jdk/jfr/event/oldobject/TestLastKnownHeapUsage.java	2018-07-19 08:21:21.458487000 +0200
+++ new/test/jdk/jdk/jfr/event/oldobject/TestLastKnownHeapUsage.java	2018-07-19 08:21:20.785476000 +0200
@@ -37,9 +37,10 @@
 import jdk.test.lib.jfr.EventNames;
 import jdk.test.lib.jfr.Events;
 
-/*
+/**
  * @test
  * @key jfr
+ * @requires vm.hasJFR
  * @requires vm.gc == "null"
  * @library /test/lib /test/jdk
  * @modules jdk.jfr/jdk.jfr.internal.test