--- old/jdk/test/tools/lib/tests/Helper.java	2016-08-08 16:36:56.000000000 -0700
+++ new/jdk/test/tools/lib/tests/Helper.java	2016-08-08 16:36:55.000000000 -0700
@@ -164,7 +164,7 @@
         Path srcMod = src.resolve(moduleName);
         JImageGenerator.generateModuleInfo(srcMod, packages, dependencies);
         Path destination = classes.resolve(moduleName);
-        if (!JImageGenerator.compile(srcMod, destination, "-modulepath", modulePath, "-g")) {
+        if (!JImageGenerator.compile(srcMod, destination, "--module-path", modulePath, "-g")) {
             throw new AssertionError("Compilation failure");
         }
         return destination;