diff --git a/phpBB/privmsg.php b/phpBB/privmsg.php
index c2934369a5..e6b64c5f16 100644
--- a/phpBB/privmsg.php
+++ b/phpBB/privmsg.php
@@ -571,6 +571,10 @@ else if ( $mode == 'read' )
 		$private_message .= '<br /><br />_________________<br />' . make_clickable($user_sig);
 	}
 
+	$orig_word = array();
+	$replacement_word = array();
+	obtain_word_list($orig_word, $replacement_word);
+
 	if ( count($orig_word) )
 	{
 		$post_subject = preg_replace($orig_word, $replacement_word, $post_subject);
@@ -1683,6 +1687,10 @@ $template->set_filenames(array(
 );
 make_jumpbox('viewforum.'.$phpEx);
 
+$orig_word = array();
+$replacement_word = array();
+obtain_word_list($orig_word, $replacement_word);
+
 //
 // New message
 //