diff --git a/lib/models/Courseware/Unit.php b/lib/models/Courseware/Unit.php
index acf2a93ab7f518316e26641063cd6725a73c9eb1..4dc1eeb08a40b76eeffac79edfeb7c2e512759dc 100644
--- a/lib/models/Courseware/Unit.php
+++ b/lib/models/Courseware/Unit.php
@@ -2,8 +2,6 @@
 
 namespace Courseware;
 
-use phootwork\collection\ArrayList;
-use phpDocumentor\Reflection\Types\Array_;
 use User;
 
 /**