--- old/test/jdk/java/lang/management/MemoryMXBean/CollectionUsageThreshold.java	2018-10-18 18:02:15.000000000 -0400
+++ new/test/jdk/java/lang/management/MemoryMXBean/CollectionUsageThreshold.java	2018-10-18 18:02:14.000000000 -0400
@@ -75,7 +75,8 @@
         RunUtil.runTestKeepGcOpts(main);
         RunUtil.runTestClearGcOpts(main, "-XX:+UseSerialGC");
         RunUtil.runTestClearGcOpts(main, "-XX:+UseParallelGC");
-        RunUtil.runTestClearGcOpts(main, "-XX:+UseG1GC");
+        RunUtil.runTestClearGcOpts(main, "-XX:+UseG1GC", "-XX:-G1UseLegacyMonitoring");
+        RunUtil.runTestClearGcOpts(main, "-XX:+UseG1GC", "-XX:+G1UseLegacyMonitoring");
         if (!Compiler.isGraalEnabled()) { // Graal does not support CMS
             RunUtil.runTestClearGcOpts(main, "-XX:+UseConcMarkSweepGC");
         }