diff --git a/libsearch/dirwatcher/dir-watcher.cpp b/libsearch/dirwatcher/dir-watcher.cpp
index 55bcb87..af6fe43 100644
--- a/libsearch/dirwatcher/dir-watcher.cpp
+++ b/libsearch/dirwatcher/dir-watcher.cpp
@@ -8,14 +8,12 @@ static std::once_flag flag;
 static DirWatcher *global_intance = nullptr;
 
 DirWatcher::DirWatcher(QObject *parent)
-    : QObject(parent), m_semaphore(QStringLiteral("ukui-search-dir-manager-dbus-register-sem"), 0, QSystemSemaphore::AccessMode::Open)
+    : QObject(parent)
 {
 
     m_dbusInterface = new QDBusInterface("com.ukui.search.fileindex.service",
                                          "/org/ukui/search/privateDirWatcher",
                                          "org.ukui.search.fileindex");
-    m_semaphore.acquire();
-    m_semaphore.release();
     if (!m_dbusInterface->isValid()) {
         qCritical() << "Create privateDirWatcher Interface Failed Because: " << QDBusConnection::sessionBus().lastError();
         return;
diff --git a/libsearch/dirwatcher/dir-watcher.h b/libsearch/dirwatcher/dir-watcher.h
index 041acb3..9536c33 100644
--- a/libsearch/dirwatcher/dir-watcher.h
+++ b/libsearch/dirwatcher/dir-watcher.h
@@ -4,7 +4,6 @@
 #include <QObject>
 #include <QDBusInterface>
 #include <QDBusReply>
-#include <QSystemSemaphore>
 
 class DirWatcher : public QObject
 {
@@ -34,8 +33,6 @@ private:
     ~DirWatcher();
 
     QDBusInterface *m_dbusInterface = nullptr;
-
-    QSystemSemaphore m_semaphore;
 };
 
 #endif // MOUNTDISKLISTENER_H
diff --git a/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.cpp b/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.cpp
index 344f4c0..6b6625b 100644
--- a/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.cpp
+++ b/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.cpp
@@ -6,7 +6,7 @@
 #include <QDebug>
 
 UkuiSearchDirManagerDbus::UkuiSearchDirManagerDbus(int &argc, char *argv[], const QString &applicationName)
-    : QtSingleApplication (applicationName, argc, argv), m_semaphore(QStringLiteral("ukui-search-dir-manager-dbus-register-sem"), 0, QSystemSemaphore::AccessMode::Create)
+    : QtSingleApplication (applicationName, argc, argv)
 {
     setQuitOnLastWindowClosed(false);
     setApplicationVersion(QString("v%1").arg(VERSION));
@@ -17,7 +17,6 @@ UkuiSearchDirManagerDbus::UkuiSearchDirManagerDbus(int &argc, char *argv[], cons
         if(!sessionBus.registerService("com.ukui.search.fileindex.service")) {
             qCritical() << "QDbus register service failed reason:" << sessionBus.lastError();
         }
-
         if(!sessionBus.registerObject("/org/ukui/search/privateDirWatcher", DirWatcher::getDirWatcher(), QDBusConnection::ExportNonScriptableSlots | QDBusConnection::ExportAllSignals)) {
             qCritical() << "ukui-search-fileindex dbus register object failed reason:" << sessionBus.lastError();
         }
@@ -28,7 +27,6 @@ UkuiSearchDirManagerDbus::UkuiSearchDirManagerDbus(int &argc, char *argv[], cons
     } else {
         qWarning() << "Ukui search dir manager is running!";
     }
-    m_semaphore.release();
     //parse cmd
     qDebug()<<"parse cmd";
     auto message = this->arguments().join(' ').toUtf8();
diff --git a/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.h b/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.h
index ddffe13..d8f7f96 100644
--- a/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.h
+++ b/ukui-search-service-dir-manager/ukui-search-dir-manager-dbus.h
@@ -1,7 +1,6 @@
 #ifndef UKUISEARCHDIRWATCHERDBUS_H
 #define UKUISEARCHDIRWATCHERDBUS_H
 
-#include <QSystemSemaphore>
 #include "qtsingleapplication.h"
 
 class UkuiSearchDirManagerDbus : public QtSingleApplication
@@ -11,8 +10,6 @@ public:
     UkuiSearchDirManagerDbus(int &argc, char *argv[], const QString &applicationName = "ukui-search-service-dir-manager");
 protected Q_SLOTS:
     void parseCmd(QString msg, bool isPrimary);
-private:
-    QSystemSemaphore m_semaphore;
 };
 
 #endif // UKUISEARCHDIRWATCHERDBUS_H