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-rw-r--r--phpBB/includes/mcp/mcp_topic.php4
1 files changed, 4 insertions, 0 deletions
diff --git a/phpBB/includes/mcp/mcp_topic.php b/phpBB/includes/mcp/mcp_topic.php
index f40a4bc044..1fb3cb9d73 100644
--- a/phpBB/includes/mcp/mcp_topic.php
+++ b/phpBB/includes/mcp/mcp_topic.php
@@ -620,6 +620,10 @@ function merge_posts($topic_id, $to_topic_id)
else
{
// If the topic no longer exist, we will update the topic watch table.
+ if (!function_exists('phpbb_update_rows_avoiding_duplicates'))
+ {
+ include($phpbb_root_path . 'includes/functions_tricky_update.' . $phpEx);
+ }
phpbb_update_rows_avoiding_duplicates($db, TOPICS_WATCH_TABLE, 'topic_id', $topic_ids, $to_topic_id);
}