diff --git a/src/main.cpp b/src/main.cpp
index 79067a5..11c93dd 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -49,7 +49,7 @@ int main(int argc, char *argv[])
     DApplication::loadDXcbPlugin();
     QScopedPointer<DApplication> app(new DApplication(argc, argv));
 #else
-    QScopedPointer<DApplication> app(DApplication::globalApplication(argc,argv));
+    QScopedPointer<DApplication> app(DApplication::globalApplication(argc, argv));
 #endif
     app->setOrganizationName("deepin");
     app->setApplicationName("deepin-ocr");
@@ -68,6 +68,7 @@ int main(int argc, char *argv[])
 
     app->loadTranslator();
 
+
     OcrApplication instance;
     QDBusConnection dbus = QDBusConnection::sessionBus();
 
@@ -89,7 +90,7 @@ int main(int argc, char *argv[])
         // 第二次运行此应用，
         // 调用DBus接口，处理交给第一次调用的进程
         // 本进程退退出
-        OcrInterface *pOcr = new OcrInterface("com.deepin.Ocr","/com/deepin/Ocr", QDBusConnection::sessionBus(), &instance);
+        OcrInterface *pOcr = new OcrInterface("com.deepin.Ocr", "/com/deepin/Ocr", QDBusConnection::sessionBus(), &instance);
         qDebug() << __FUNCTION__ << __LINE__;
         pOcr->openFile(QString(argv[1]));
         //pOcr->openImage(QImage(QSize(500, 145), QImage::Format_RGB32));
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 617b96a..440a1b6 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -25,7 +25,9 @@
 
 #include <QLabel>
 #include <QDBusConnection>
+
 #include <DTitlebar>
+#include <DWidgetUtil>
 
 MainWindow::MainWindow(QWidget *parent)
     : DMainWindow(parent)
@@ -37,6 +39,7 @@ MainWindow::MainWindow(QWidget *parent)
     this->setCentralWidget(m_mainWidget);
     this->resize(840, 550);
     this->setMinimumSize(840, 550);
+    Dtk::Widget::moveToCenter(this);
 }
 
 MainWindow::~MainWindow()
diff --git a/src/mainwindow.h b/src/mainwindow.h
index 0f910b3..446db05 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -27,6 +27,7 @@
 
 class MainWidget;
 DWIDGET_USE_NAMESPACE
+
 class MainWindow : public DMainWindow
 {
     Q_OBJECT