--- a/docs/intel-pii-events.php3
+++ b/docs/intel-pii-events.php3
@@ -1,4 +1,4 @@
-<?php require("../start_page.php3"); start_page("docs/intel-pii-events.php3", "Intel Pentium II performance counter events"); ?>
+<?php require("../start_page.php"); start_page("docs/intel-pii-events.php", "Intel Pentium II performance counter events"); ?>
 
 <h2>Intel Pentium II</h2>
 
@@ -9,7 +9,7 @@
 
 <?php start_event_table(); ?>
 
-<?php readfile(basename(__FILE__, ".php3")); ?>
+<?php readfile(basename(__FILE__, ".php")); ?>
 <?php end_table(); ?>
 
-<?php require("$top/end_page.php3"); end_page("/docs/" . basename(__FILE__)); ?>
+<?php require("$top/end_page.php"); end_page("/docs/" . basename(__FILE__)); ?>