diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index a464eefc97..ffb25914c6 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -1573,10 +1573,7 @@ function wp_mail($to, $subject, $message, $headers = '', $more = '') {
 		"Content-Type: text/plain; charset=\"" . get_settings('blog_charset') . "\"\n";
 	}
 
-	if ( function_exists('mb_send_mail') )
-		return @mb_send_mail($to, $subject, $message, $headers, $more);
-	else
-		return @mail($to, $subject, $message, $headers, $more);
+	return @mail($to, $subject, $message, $headers, $more);
 }
 
 if ( !function_exists('wp_login') ) :