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-rw-r--r--phpBB/viewtopic.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/phpBB/viewtopic.php b/phpBB/viewtopic.php
index f7e46467b8..60683da22c 100644
--- a/phpBB/viewtopic.php
+++ b/phpBB/viewtopic.php
@@ -1306,7 +1306,7 @@ unset($user_cache);
// Update topic view and if necessary attachment view counters ... but only
// if this is the first 'page view'
-if (!preg_match("#&t=$topic_id#", $user->data['session_page']))
+if (isset($user->data['session_page']) && !preg_match("#&t=$topic_id#", $user->data['session_page']))
{
$sql = 'UPDATE ' . TOPICS_TABLE . '
SET topic_views = topic_views + 1, topic_last_view_time = ' . time() . "