--- a/test/jdk/sun/tools/jstat/jstatHelp.sh	Thu Jan 11 20:19:50 2018 -0800
+++ b/test/jdk/sun/tools/jstat/jstatHelp.sh	Tue Jan 16 08:48:34 2018 +0100
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2004, 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2004, 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
@@ -24,7 +24,7 @@
 # @test
 # @bug 4990825 6364329
 # @run shell jstatHelp.sh
-# @summary Test that output of 'jstat -?', 'jstat -help' and 'jstat' matches the usage.out file
+# @summary Test that output of 'jstat -?', 'jstat -h', 'jstat --help' and 'jstat' matches the usage.out file
 
 . ${TESTSRC-.}/../../jvmstat/testlibrary/utils.sh
 
@@ -43,12 +43,22 @@
 fi
 
 rm -f jstat.out 2>/dev/null
-${JSTAT} -J-XX:+UsePerfData -help > jstat.out 2>&1
+${JSTAT} -J-XX:+UsePerfData --help > jstat.out 2>&1
 
 diff -w jstat.out ${TESTSRC}/usage.out
 if [ $? != 0 ]
 then
-  echo "Output of jstat -help differs from expected output. Failed."
+  echo "Output of jstat -h differs from expected output. Failed."
+  exit 1
+fi
+
+rm -f jstat.out 2>/dev/null
+${JSTAT} -J-XX:+UsePerfData --help > jstat.out 2>&1
+
+diff -w jstat.out ${TESTSRC}/usage.out
+if [ $? != 0 ]
+then
+  echo "Output of jstat --help differs from expected output. Failed."
   exit 1
 fi