diff --git a/attempt.php b/attempt.php
index 1905f17..9ed75b2 100755
--- a/attempt.php
+++ b/attempt.php
@@ -82,8 +82,6 @@
             $USER->editing = $edit;
         }
 
-        $PAGE->requires->yui2_lib('event');
-
         // Note: MDL-19010 there will be further changes to printing header and blocks.
         // The code will be much nicer than this eventually.
         $title = $course->shortname . ': ' . format_string($game->name);
diff --git a/header.php b/header.php
index 76eaf3e..89126fc 100755
--- a/header.php
+++ b/header.php
@@ -59,8 +59,6 @@
         $USER->editing = $edit;
     }
 
-    $PAGE->requires->yui2_lib('event');
-
     // Note: MDL-19010 there will be further changes to printing header and blocks.
     // The code will be much nicer than this eventually.
     $title = $course->shortname . ': ' . format_string($game->name);
diff --git a/view.php b/view.php
index e4347a7..2065b80 100755
--- a/view.php
+++ b/view.php
@@ -58,8 +58,6 @@
         $USER->editing = $edit;
     }
 
-    $PAGE->requires->yui2_lib('event');
-
     $title = $course->shortname . ': ' . format_string($game->name);
 
     if ($PAGE->user_allowed_editing() && !empty($CFG->showblocksonmodpages)) {