diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index 30be597acb..7c560be284 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -123,6 +123,7 @@
 		<li>[Fix] Correctly handle unread status of subforums (that are not shown on the index) of forums that are shown on the index. (Bug #14589)</li>
 		<li>[Fix] Stop users from deleting posts after the edit time has passed or they have been locked. (Bug #19115)</li>
 		<li>[Fix] Split posts target forum requires 'f_post' now instead of 'm_split'. (Bug #31015)</li>
+		<li>[Fix] Duplicate log messages for deleting a topic ('LOG_TOPIC_DELETED' has been deprecated in favour of 'LOG_DELETE_TOPIC').</li>
 
 		<li>[Change] No longer allow the direct use of MULTI_INSERT in sql_build_array. sql_multi_insert() must be used.</li>
 		<li>[Change] Display warning in ACP if config.php file is left writable.</li>
diff --git a/phpBB/includes/mcp/mcp_main.php b/phpBB/includes/mcp/mcp_main.php
index 1b6a26dc07..07ec84f0de 100644
--- a/phpBB/includes/mcp/mcp_main.php
+++ b/phpBB/includes/mcp/mcp_main.php
@@ -781,7 +781,7 @@ function mcp_delete_topic($topic_ids)
 
 		foreach ($data as $topic_id => $row)
 		{
-			add_log('mod', $row['forum_id'], 0, 'LOG_TOPIC_DELETED', $row['topic_title']);
+			add_log('mod', $row['forum_id'], $topic_id, 'LOG_DELETED_TOPIC', $row['topic_title']);
 		}
 
 		$return = delete_topics('topic_id', $topic_ids);
diff --git a/phpBB/language/en/acp/common.php b/phpBB/language/en/acp/common.php
index 06b30cf03b..cb3442e9a9 100644
--- a/phpBB/language/en/acp/common.php
+++ b/phpBB/language/en/acp/common.php
@@ -488,7 +488,6 @@ $lang = array_merge($lang, array(
 	'LOG_SPLIT_DESTINATION'		=> '<strong>Moved split posts</strong><br />» to %s',
 	'LOG_SPLIT_SOURCE'			=> '<strong>Split posts</strong><br />» from %s',
 
-	'LOG_TOPIC_DELETED'			=> '<strong>Deleted topic</strong><br />» %s',
 	'LOG_TOPIC_APPROVED'		=> '<strong>Approved topic</strong><br />» %s',
 	'LOG_TOPIC_DISAPPROVED'		=> '<strong>Disapproved topic “%1$s” with the following reason</strong><br />%2$s',
 	'LOG_TOPIC_RESYNC'			=> '<strong>Resynchronised topic counters</strong><br />» %s',
@@ -688,4 +687,9 @@ $lang = array_merge($lang, array(
 	'LOG_WORD_EDIT'			=> '<strong>Edited word censor</strong><br />» %s',
 ));
 
+// Two language keys with the same text were used in different locations
+// LOG_DELETE_TOPIC is the correct one, this line is here so that existing
+// log entries are not broken. Ensure it is included in your language file.
+$lang['LOG_TOPIC_DELETED'] = $lang['LOG_DELETE_TOPIC'];
+
 ?>
\ No newline at end of file