--- old/src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java	2017-02-08 11:44:13.310678362 -0800
+++ new/src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java	2017-02-08 11:44:13.172677325 -0800
@@ -579,7 +579,7 @@
         }
     },
 
-    XMODULE("-Xmodule:", "opt.arg.module", "opt.module", EXTENDED, BASIC) {
+    XMODULE("-Xmodule:", "opt.arg.module", "opt.module", HIDDEN, BASIC) {
         @Override
         public void process(OptionHelper helper, String option, String arg) throws InvalidValueException {
             String prev = helper.get(XMODULE);