diff --git a/mod/forum/post.php b/mod/forum/post.php
index c11e6b6121c..3d1585a98b0 100644
--- a/mod/forum/post.php
+++ b/mod/forum/post.php
@@ -345,7 +345,7 @@
         }
         
         if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
-            if (!$cm->visible and !has_capability('moodle/course:manageactivities', $coursecontext)) {
+            if (!$cm->visible and !has_capability('moodle/course:viewhiddenactivities', $coursecontext)) {
                 error(get_string("activityiscurrentlyhidden"));
             }
         }