diff --git a/ext/spl/spl_observer.c b/ext/spl/spl_observer.c
index 4b8be82eee78d..f1b3f7c144bcd 100755
--- a/ext/spl/spl_observer.c
+++ b/ext/spl/spl_observer.c
@@ -4,7 +4,7 @@
    +----------------------------------------------------------------------+
    | Copyright (c) 1997-2012 The PHP Group                                |
    +----------------------------------------------------------------------+
-   | This source file is SplSubject to version 3.01 of the PHP license,      |
+   | 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                                  |