Index: textpattern/index.php
===================================================================
--- textpattern/index.php	(revision 2520)
+++ textpattern/index.php	(working copy)
@@ -101,7 +101,7 @@
 
 		$inc = txpath . '/include/txp_'.$event.'.php';
 		if (is_readable($inc))
-			include($inc);
+			include_once($inc);
 	
 		callback_event($event, $step, 0);