--- old/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystemProvider.java	2018-09-18 10:33:52.681730508 -0700
+++ new/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystemProvider.java	2018-09-18 10:33:52.289694900 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2009, 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
@@ -124,9 +124,6 @@
     public FileSystem newFileSystem(Path path, Map<String, ?> env)
         throws IOException
     {
-        if (path.getFileSystem() != FileSystems.getDefault()) {
-            throw new UnsupportedOperationException();
-        }
         ensureFile(path);
          try {
              ZipFileSystem zipfs;