diff --git a/haxe/ui/dragdrop/DragManager.hx b/haxe/ui/dragdrop/DragManager.hx
index ef78e58b7..2af6bcf34 100644
--- a/haxe/ui/dragdrop/DragManager.hx
+++ b/haxe/ui/dragdrop/DragManager.hx
@@ -133,6 +133,7 @@ class DragManager {
     ///////////////
 
     private function onMouseDown(e:MouseEvent) {
+        if (_currentComponent != null) return;
         // set current pending dragging component
         _currentComponent = _mouseTargetToDragTarget.get(e.target);
         if (_currentComponent.parentComponent == null) {