--- old/src/java.prefs/unix/native/libprefs/FileSystemPreferences.c	2018-06-07 22:09:39.992229571 +0200
+++ new/src/java.prefs/unix/native/libprefs/FileSystemPreferences.c	2018-06-07 22:09:39.748229573 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 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
@@ -34,6 +34,7 @@
 #include <errno.h>
 #include <utime.h>
 #include "jni_util.h"
+#include "java_util_prefs_FileSystemPreferences.h"
 
 /*
  * Declare library specific JNI_Onload entry if static build