diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index b9d85ffd19..18e0f5455d 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -105,6 +105,7 @@
 		<li>[Fix] PHP 5.3 compatibility: Disable E_DEPRECATED on startup to keep set_magic_quotes_runtime(0) quiet. (Bug #54495)</li>
 		<li>[Fix] Correctly replace table prefix before inserting schema data into the database. (Bug #54815)</li>
 		<li>[Fix] Correctly take post time instead of topic time for the overall forum feed statistics row. (Bug #55005)</li>
+		<li>[Fix] Posting errors with CAPTCHAs using user::add_lang(). (Bug #55245)</li>
 		<li>[Change] Send time of last item instead of current time in ATOM Feeds. (Bug #53305)</li>
 		<li>[Change] Use em dash instead of hyphen/minus as separator in ATOM Feeds item statistics. (Bug #53565)</li>
 	</ul>
diff --git a/phpBB/posting.php b/phpBB/posting.php
index f5d1346865..660ca8ef23 100644
--- a/phpBB/posting.php
+++ b/phpBB/posting.php
@@ -45,13 +45,6 @@ $mode		= ($delete && !$preview && !$refresh && $submit) ? 'delete' : request_var
 $error = $post_data = array();
 $current_time = time();
 
-if ($config['enable_post_confirm'] && !$user->data['is_registered'])
-{
-	include($phpbb_root_path . 'includes/captcha/captcha_factory.' . $phpEx);
-	$captcha =& phpbb_captcha_factory::get_instance($config['captcha_plugin']);
-	$captcha->init(CONFIRM_POST);
-}
-
 // Was cancel pressed? If so then redirect to the appropriate page
 if ($cancel || ($current_time - $lastclick < 2 && $submit))
 {
@@ -186,6 +179,13 @@ if ($mode == 'popup')
 
 $user->setup(array('posting', 'mcp', 'viewtopic'), $post_data['forum_style']);
 
+if ($config['enable_post_confirm'] && !$user->data['is_registered'])
+{
+	include($phpbb_root_path . 'includes/captcha/captcha_factory.' . $phpEx);
+	$captcha =& phpbb_captcha_factory::get_instance($config['captcha_plugin']);
+	$captcha->init(CONFIRM_POST);
+}
+
 // Use post_row values in favor of submitted ones...
 $forum_id	= (!empty($post_data['forum_id'])) ? (int) $post_data['forum_id'] : (int) $forum_id;
 $topic_id	= (!empty($post_data['topic_id'])) ? (int) $post_data['topic_id'] : (int) $topic_id;