diff --git a/phpBB/privmsg.php b/phpBB/privmsg.php
index 163d7a1813..e6d0388a53 100644
--- a/phpBB/privmsg.php
+++ b/phpBB/privmsg.php
@@ -524,7 +524,7 @@ else if ( $mode == 'read' )
 	$aim_img = ( $privmsg['user_aim'] ) ? '<a href="aim:goim?screenname=' . $privmsg['user_aim'] . '&amp;message=Hello+Are+you+there?"><img src="' . $images['icon_aim'] . '" alt="' . $lang['AIM'] . '" title="' . $lang['AIM'] . '" border="0" /></a>' : '';
 	$aim = ( $privmsg['user_aim'] ) ? '<a href="aim:goim?screenname=' . $privmsg['user_aim'] . '&amp;message=Hello+Are+you+there?">' . $lang['AIM'] . '</a>' : '';
 
-	$temp_url = append_sid("profile.$phpEx?mode=viewprofile&amp;" . POST_USERS_URL . "=$poster_id");
+	$temp_url = append_sid("profile.$phpEx?mode=viewprofile&amp;" . POST_USERS_URL . "=$user_id_from");
 	$msn_img = ( $privmsg['user_msnm'] ) ? '<a href="' . $temp_url . '"><img src="' . $images['icon_msnm'] . '" alt="' . $lang['MSNM'] . '" title="' . $lang['MSNM'] . '" border="0" /></a>' : '';
 	$msn = ( $privmsg['user_msnm'] ) ? '<a href="' . $temp_url . '">' . $lang['MSNM'] . '</a>' : '';