diff --git a/ukui-search-app-data-service/pending-app-info-queue.cpp b/ukui-search-app-data-service/pending-app-info-queue.cpp
index 8213383..48d5442 100644
--- a/ukui-search-app-data-service/pending-app-info-queue.cpp
+++ b/ukui-search-app-data-service/pending-app-info-queue.cpp
@@ -101,6 +101,8 @@ PendingAppInfoQueue::PendingAppInfoQueue(QObject *parent) : QThread(parent)
 
 PendingAppInfoQueue::~PendingAppInfoQueue()
 {
+    this->quit();
+    this->wait();
     if (m_minProcessTimer) {
         delete m_minProcessTimer;
     }