Index: wp-settings.php
===================================================================
--- wp-settings.php	(revision 18305)
+++ wp-settings.php	(working copy)
@@ -275,9 +275,9 @@
 // Load the functions for the active theme, for both parent and child theme if applicable.
 if ( ! defined( 'WP_INSTALLING' ) || 'wp-activate.php' === $pagenow ) {
 	if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) )
-		include( STYLESHEETPATH . '/functions.php' );
+		include_once( STYLESHEETPATH . '/functions.php' );
 	if ( file_exists( TEMPLATEPATH . '/functions.php' ) )
-		include( TEMPLATEPATH . '/functions.php' );
+		include_once( TEMPLATEPATH . '/functions.php' );
 }
 
 do_action( 'after_setup_theme' );