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-rw-r--r--plugins/newmail_notifier/newmail_notifier.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/plugins/newmail_notifier/newmail_notifier.php b/plugins/newmail_notifier/newmail_notifier.php
index a45eeaedb..e985c8b49 100644
--- a/plugins/newmail_notifier/newmail_notifier.php
+++ b/plugins/newmail_notifier/newmail_notifier.php
@@ -51,7 +51,7 @@ class newmail_notifier extends rcube_plugin
else { // if ($this->rc->task == 'mail') {
$this->add_hook('new_messages', array($this, 'notify'));
// add script when not in ajax and not in frame
- if (is_a($this->rc->output, 'rcube_output_html') && empty($_REQUEST['_framed'])) {
+ if ($this->rc->output->type == 'html' && empty($_REQUEST['_framed'])) {
$this->add_texts('localization/');
$this->rc->output->add_label('newmail_notifier.title', 'newmail_notifier.body');
$this->include_script('newmail_notifier.js');