diff --git a/ui/jquery.ui.draggable.js b/ui/jquery.ui.draggable.js
index 9b76bbca7..c1411e065 100644
--- a/ui/jquery.ui.draggable.js
+++ b/ui/jquery.ui.draggable.js
@@ -9,6 +9,7 @@
  *
  * Depends:
  *	jquery.ui.core.js
+ *	jquery.ui.interaction.js
  *	jquery.ui.widget.js
  */
 (function( $, undefined ) {
diff --git a/ui/jquery.ui.droppable.js b/ui/jquery.ui.droppable.js
index 714a8ec2f..77a2475d1 100644
--- a/ui/jquery.ui.droppable.js
+++ b/ui/jquery.ui.droppable.js
@@ -10,6 +10,7 @@
  * Depends:
  *	jquery.ui.core.js
  *	jquery.ui.widget.js
+ *	jquery.ui.interaction.js
  *	jquery.ui.draggable.js
  */
 (function( $, undefined ) {