diff --git a/caca-php/examples/www/export.php b/caca-php/examples/www/export.php
index 65c8f1b..2f12e11 100644
--- a/caca-php/examples/www/export.php
+++ b/caca-php/examples/www/export.php
@@ -150,6 +150,7 @@ $content_type_map = array(
 	);
 
 $download_extension_map = array(
+	'caca' => 'caca',
 	'ansi' => 'txt',
 	'utf8' => 'txt',
 	'utf8cr' => 'txt',