diff --git a/lib/conditionlib.php b/lib/conditionlib.php
index a52514941b7..87ad57a6cd7 100644
--- a/lib/conditionlib.php
+++ b/lib/conditionlib.php
@@ -1324,7 +1324,7 @@ abstract class condition_info_base {
         }
         $iscurrentuser = $USER->id == $userid;
 
-        if (isguestuser($userid)) {
+        if (isguestuser($userid) || ($iscurrentuser && !isloggedin())) {
             // Must be logged in and can't be the guest. (this should never happen anyway)
             return false;
         }