--- wp-includes/functions.php	2009-10-21 09:35:37.000000000 +0000
+++ ../functions.php	2009-11-08 22:16:05.000000000 +0000
@@ -2239,7 +2239,7 @@
 		'divx' => 'video/divx',
 		'mov|qt' => 'video/quicktime',
 		'mpeg|mpg|mpe' => 'video/mpeg',
-		'txt|c|cc|h' => 'text/plain',
+		'txt|c|cc|asc|h' => 'text/plain',
 		'rtx' => 'text/richtext',
 		'css' => 'text/css',
 		'htm|html' => 'text/html',