diff --git a/web/zm.php b/web/zm.php
index 2e2a90fcb..d44a15caf 100644
--- a/web/zm.php
+++ b/web/zm.php
@@ -32,7 +32,7 @@ if ( !isset($PHP_SELF) )
 $accepts_wml = preg_match( '/text\/vnd.wap.wml/i', $HTTP_SERVER_VARS[HTTP_ACCEPT] );
 $accepts_html = preg_match( '/text\/html/i', $HTTP_SERVER_VARS[HTTP_ACCEPT] );
 
-if ( $accepts_wml && !$accepts_html )
+if ( isset($wml) || ($accepts_wml && !$accepts_html) )
 {
 	require_once( 'zmwml.php' );
 }