--- a/jdk/src/java.base/windows/classes/sun/nio/fs/WindowsWatchService.java	Wed Mar 09 13:37:30 2016 +0000
+++ b/jdk/src/java.base/windows/classes/sun/nio/fs/WindowsWatchService.java	Wed Mar 09 21:17:06 2016 +0100
@@ -463,7 +463,7 @@
             }
             CloseHandle(key.handle());
             closeAttachedEvent(key.overlappedAddress());
-            key.buffer().cleaner().clean();
+            key.buffer().free();
         }
 
         /**