diff --git a/appendices/about.xml b/appendices/about.xml
index dbf722feea..cfd6cdda20 100644
--- a/appendices/about.xml
+++ b/appendices/about.xml
@@ -168,10 +168,10 @@ Returns the length of given string.
- (PHP 4, PHP 5, PHP 6)
+ (PHP 4, PHP 5)
- strlen() has been around in all versions of PHP 4, PHP 5 and PHP 6
+ strlen() has been around in all versions of PHP 4 and PHP 5