diff --git a/src/components/multiselect-list.cjsx b/src/components/multiselect-list.cjsx
index b8621497a..9ca60d560 100644
--- a/src/components/multiselect-list.cjsx
+++ b/src/components/multiselect-list.cjsx
@@ -210,7 +210,7 @@ class MultiselectList extends React.Component
   # Public Methods
 
   itemIdAtPoint: (x, y) ->
-    item = document.elementFromPoint(event.clientX, event.clientY).closest('[data-item-id]')
+    item = document.elementFromPoint(x, y).closest('[data-item-id]')
     return null unless item
     return item.dataset.itemId