diff --git a/phpBB/posting.php b/phpBB/posting.php
index 8d40652574..e2329d610d 100644
--- a/phpBB/posting.php
+++ b/phpBB/posting.php
@@ -597,6 +597,20 @@ if (isset($post_data['post_text']))
 // Set some default variables
 $uninit = array('post_attachment' => 0, 'poster_id' => $user->data['user_id'], 'enable_magic_url' => 0, 'topic_status' => 0, 'topic_type' => POST_NORMAL, 'post_subject' => '', 'topic_title' => '', 'post_time' => 0, 'post_edit_reason' => '', 'notify_set' => 0);
 
+/**
+* This event allows you to modify the default variables for post_data, and unset them in post_data if needed
+*
+* @event core.posting_modify_default_variables
+* @var	array	post_data	Array with post data
+* @var	array	uninit		Array with default vars to put into post_data, if they aren't there
+* @since 3.2.5-RC1
+*/
+$vars = array(
+	'post_data',
+	'uninit',
+);
+extract($phpbb_dispatcher->trigger_event('core.posting_modify_default_variables', compact($vars)));
+
 foreach ($uninit as $var_name => $default_value)
 {
 	if (!isset($post_data[$var_name]))