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.
         </row>
         <row>
          <entry>
-          (PHP 4, PHP 5, PHP 6)
+          (PHP 4, PHP 5)
          </entry>
          <entry>
-          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
          </entry>
         </row>
         <row>