diff --git a/app/dialog/task/task.cpp b/app/dialog/task/task.cpp
index 15ba2eb2c..792648e48 100644
--- a/app/dialog/task/task.cpp
+++ b/app/dialog/task/task.cpp
@@ -21,7 +21,7 @@ TaskDialog::TaskDialog(Task* task, const QString& title, QWidget *parent) :
   connect(task_, &Task::Finished, this, &TaskDialog::deleteLater, Qt::QueuedConnection);
   connect(task_, &Task::Finished, task_, &Task::deleteLater, Qt::QueuedConnection);
   connect(task_, &Task::Finished, thread_, &QThread::quit, Qt::QueuedConnection);
-  connect(task_, &Task::Finished, thread_, &QThread::deleteLater, Qt::QueuedConnection);
+  connect(thread_, &QThread::finished, thread_, &QThread::deleteLater, Qt::QueuedConnection);
 }
 
 void TaskDialog::open()