diff --git a/scripts/perf-counters/src/hardware-counter.cpp b/scripts/perf-counters/src/hardware-counter.cpp
index 26783d28f4..10a2bc3ca5 100644
--- a/scripts/perf-counters/src/hardware-counter.cpp
+++ b/scripts/perf-counters/src/hardware-counter.cpp
@@ -1,18 +1,11 @@
-/*
-   +----------------------------------------------------------------------+
-   | HipHop for PHP                                                       |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com)     |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.01 of the PHP license,      |
-   | that is bundled with this package in the file LICENSE, and is        |
-   | available through the world-wide-web at the following url:           |
-   | http://www.php.net/license/3_01.txt                                  |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-*/
+/**
+ * Copyright 2010-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
 
 #include "hphp/util/hardware-counter.h"
 
diff --git a/scripts/perf-counters/src/hardware-counter.h b/scripts/perf-counters/src/hardware-counter.h
index 7a92dcc5ae..9e266380e8 100644
--- a/scripts/perf-counters/src/hardware-counter.h
+++ b/scripts/perf-counters/src/hardware-counter.h
@@ -1,18 +1,11 @@
-/*
-   +----------------------------------------------------------------------+
-   | HipHop for PHP                                                       |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com)     |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.01 of the PHP license,      |
-   | that is bundled with this package in the file LICENSE, and is        |
-   | available through the world-wide-web at the following url:           |
-   | http://www.php.net/license/3_01.txt                                  |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-*/
+/**
+ * Copyright 2010-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
 
 #ifndef incl_HPHP_UTIL_HARDWARE_COUNTER_H_
 #define incl_HPHP_UTIL_HARDWARE_COUNTER_H_
diff --git a/scripts/perf-counters/src/portability.h b/scripts/perf-counters/src/portability.h
index 26b4e1b1b0..b1d3995ccf 100644
--- a/scripts/perf-counters/src/portability.h
+++ b/scripts/perf-counters/src/portability.h
@@ -1,18 +1,12 @@
-/*
-   +----------------------------------------------------------------------+
-   | HipHop for PHP                                                       |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com)     |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.01 of the PHP license,      |
-   | that is bundled with this package in the file LICENSE, and is        |
-   | available through the world-wide-web at the following url:           |
-   | http://www.php.net/license/3_01.txt                                  |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-*/
+/**
+ * Copyright 2010-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
 #ifndef incl_HPHP_PORTABILITY_H_
 #define incl_HPHP_PORTABILITY_H_
 
diff --git a/scripts/perf-counters/src/thread-local.cpp b/scripts/perf-counters/src/thread-local.cpp
index 5efac97231..3e9df4c207 100644
--- a/scripts/perf-counters/src/thread-local.cpp
+++ b/scripts/perf-counters/src/thread-local.cpp
@@ -1,18 +1,11 @@
-/*
-   +----------------------------------------------------------------------+
-   | HipHop for PHP                                                       |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com)     |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.01 of the PHP license,      |
-   | that is bundled with this package in the file LICENSE, and is        |
-   | available through the world-wide-web at the following url:           |
-   | http://www.php.net/license/3_01.txt                                  |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-*/
+/**
+ * Copyright 2010-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
 
 #include "hphp/util/thread-local.h"
 
diff --git a/scripts/perf-counters/src/thread-local.h b/scripts/perf-counters/src/thread-local.h
index 6f6fbce661..919531bb28 100644
--- a/scripts/perf-counters/src/thread-local.h
+++ b/scripts/perf-counters/src/thread-local.h
@@ -1,18 +1,11 @@
-/*
-   +----------------------------------------------------------------------+
-   | HipHop for PHP                                                       |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com)     |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.01 of the PHP license,      |
-   | that is bundled with this package in the file LICENSE, and is        |
-   | available through the world-wide-web at the following url:           |
-   | http://www.php.net/license/3_01.txt                                  |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-*/
+/**
+ * Copyright 2010-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
 
 #ifndef incl_HPHP_THREAD_LOCAL_H_
 #define incl_HPHP_THREAD_LOCAL_H_