diff --git a/os/ext/CMSIS/KINETIS/kl25z.h b/os/ext/CMSIS/KINETIS/kl25z.h
index 331142dd7..ab61670c7 100644
--- a/os/ext/CMSIS/KINETIS/kl25z.h
+++ b/os/ext/CMSIS/KINETIS/kl25z.h
@@ -1,8 +1,8 @@
 /*
- * Copyright © 2013-2014 Fabio Utzig, http://fabioutzig.com
+ * Copyright (C) 2013-2014 Fabio Utzig, http://fabioutzig.com
  *
  * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the “Software”),
+ * a copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
@@ -11,7 +11,7 @@
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
- * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER