diff --git a/mod/forum/post.php b/mod/forum/post.php
index 2c87a9259cf..b8b584f8c2d 100644
--- a/mod/forum/post.php
+++ b/mod/forum/post.php
@@ -114,6 +114,10 @@
         if (! $course = get_record("course", "id", $discussion->course)) {
             error("The course number was incorrect ($discussion->course)");
         }
+
+        if (! forum_user_can_post($forum)) {
+            error("Sorry, but you can not post in this forum.");
+        }
         // Load up the $post variable.
 
         $post->course  = $course->id;