diff --git a/browser/components/customizableui/CustomizeMode.jsm b/browser/components/customizableui/CustomizeMode.jsm
index 179e1fa3e19e..ba190268d440 100644
--- a/browser/components/customizableui/CustomizeMode.jsm
+++ b/browser/components/customizableui/CustomizeMode.jsm
@@ -1825,7 +1825,7 @@ CustomizeMode.prototype = {
       return;
     }
 
-    let targetAreaType = CustomizableUI.getAreaType(targetArea.id);
+    let targetAreaType = CustomizableUI.getPlaceForItem(targetArea);
     let targetNode = this._getDragOverNode(aEvent, targetArea, targetAreaType, draggedItemId);
 
     // We need to determine the place that the widget is being dropped in