diff --git a/panels/dock/taskmanager/package/TaskManager.qml b/panels/dock/taskmanager/package/TaskManager.qml
index bb8194b63..1177a52d9 100644
--- a/panels/dock/taskmanager/package/TaskManager.qml
+++ b/panels/dock/taskmanager/package/TaskManager.qml
@@ -255,6 +255,7 @@ ContainmentItem {
                 launcherDndWinId = drag.getDataAsString("text/x-dde-dock-dnd-winid")
                 launcherDndDesktopId = desktopId
                 if (launcherDndDragSource !== "taskbar" && taskmanager.Applet.requestDockByDesktopId(desktopId) === false) {
+                    drag.accepted = false
                     resetDndState()
                 }
             }