diff a/test/jdk/com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java b/test/jdk/com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java
--- a/test/jdk/com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java
+++ b/test/jdk/com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java
@@ -59,11 +59,11 @@
             }
 
             ProcessBuilder pb = ProcessTools.
                 createJavaProcessBuilder(
                     "--add-exports", "jdk.attach/sun.tools.attach=ALL-UNNAMED",
-                    "-XX:+UseConcG1GC",  // this will cause MaxNewSize to be FLAG_SET_ERGO
+                    "-XX:+UseG1GC",  // this will cause MaxNewSize to be FLAG_SET_ERGO
                     "-XX:+UseCodeAging",
                     "-XX:+UseCerealGC",         // Should be ignored.
                     "-XX:Flags=" + flagsFile.getAbsolutePath(),
                     "-Djdk.attach.allowAttachSelf",
                     "-cp", System.getProperty("test.class.path"),