diff --git a/src/aui-tree/js/aui-tree-view.js b/src/aui-tree/js/aui-tree-view.js
index e9db6fda1b0..0a982a686f1 100644
--- a/src/aui-tree/js/aui-tree-view.js
+++ b/src/aui-tree/js/aui-tree-view.js
@@ -768,7 +768,7 @@ var TreeViewDD = A.Component.create({
             // cannot drop the dragged element into any of its children
             // nor above an undraggable element
             // using DOM contains method for performance reason
-            if (!!dropTreeNode.get(DRAGGABLE) && !dragNode.contains(dropNode)) {
+            if ( !! dropTreeNode.get(DRAGGABLE) && !dragNode.contains(dropNode)) {
                 // nArea splits the height in 3 areas top/center/bottom these
                 // areas are responsible for defining the state when the mouse
                 // is over any of them