diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index e81994a5556..bef85967a28 100644
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -3770,8 +3770,8 @@ function forum_print_discussion_header(&$post, $forum, $group=-1, $datestring=""
     $usermodified->id = $post->usermodified;
     $usermodified = username_load_fields_from_object($usermodified, $post, 'um');
 
-    // Show link to last poster and their post if user can see them.
-    if ($canviewparticipants) {
+    // In QA forums we check that the user can view participants.
+    if ($forum->type !== 'qanda' || $canviewparticipants) {
         echo '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$post->usermodified.'&amp;course='.$forum->course.'">'.
              fullname($usermodified).'</a><br />';
         $parenturl = (empty($post->lastpostid)) ? '' : '&amp;parent='.$post->lastpostid;