diff --git a/phpBB/includes/mcp/mcp_topic.php b/phpBB/includes/mcp/mcp_topic.php
index 953ec95af1..5e50ccf985 100644
--- a/phpBB/includes/mcp/mcp_topic.php
+++ b/phpBB/includes/mcp/mcp_topic.php
@@ -638,9 +638,10 @@ function split_topic($action, $topic_id, $to_forum_id, $subject)
 			$topic_info['topic_title']
 		));
 
-		// Change topic title of first post
+		// Change topic title of first post and write icon_id to post
 		$sql = 'UPDATE ' . POSTS_TABLE . "
-			SET post_subject = '" . $db->sql_escape($subject) . "'
+			SET post_subject = '" . $db->sql_escape($subject) . "',
+			icon_id = '" . $icon_id .  "'
 			WHERE post_id = {$post_id_list[0]}";
 		$db->sql_query($sql);