--- old/src/jdk.compiler/share/classes/com/sun/tools/javac/file/PathFileObject.java	2015-06-23 14:27:30.000000000 +0200
+++ new/src/jdk.compiler/share/classes/com/sun/tools/javac/file/PathFileObject.java	2015-06-23 14:27:29.000000000 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2009, 2015, 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
@@ -104,8 +104,8 @@
         return new PathFileObject(fileManager, path) {
             @Override
             public String inferBinaryName(Iterable<? extends Path> paths) {
-                // use subpath to ignore the leading component containing the module name
-                return toBinaryName(path.subpath(1, path.getNameCount()));
+                // use subpath to ignore the leading /modules/MODULE-NAME
+                return toBinaryName(path.subpath(2, path.getNameCount()));
             }
         };
     }