diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index 75359a234f1..68a414c66e9 100644
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -4592,20 +4592,20 @@ function forum_user_can_see_post($forum, $discussion, $post, $user=NULL, $cm=NUL
 
     // retrieve objects (yuk)
     if (is_numeric($forum)) {
-        debugging('missinf full forum', DEBUG_DEVELOPER);
+        debugging('missing full forum', DEBUG_DEVELOPER);
         if (!$forum = get_record('forum','id',$forum)) {
             return false;
         }
     }
 
     if (is_numeric($discussion)) {
-        debugging('missinf full discussion', DEBUG_DEVELOPER);
+        debugging('missing full discussion', DEBUG_DEVELOPER);
         if (!$discussion = get_record('forum_discussions','id',$discussion)) {
             return false;
         }
     }
     if (is_numeric($post)) {
-        debugging('missinf full post', DEBUG_DEVELOPER);
+        debugging('missing full post', DEBUG_DEVELOPER);
         if (!$post = get_record('forum_posts','id',$post)) {
             return false;
         }