Index: course/loginas.php
===================================================================
--- course/loginas.php	(revision 7)
+++ course/loginas.php	(working copy)
@@ -64,7 +64,7 @@
 session_loginas($userid, $context);
 $newfullname = fullname($USER, true);
 
-add_to_log($course->id, "course", "loginas", "../user/view.php?id=$course->id&user=$userid", "$oldfullname -> $newfullname");
+add_to_log($course->id, "course", "loginas", "../user/view.php?id=$course->id&user=$userid", "$oldfullname -> $newfullname", 0, session_get_realuser()->id);
 
 $strloginas    = get_string('loginas');
 $strloggedinas = get_string('loggedinas', '', $newfullname);