diff --git a/DSView/pv/mainframe.cpp b/DSView/pv/mainframe.cpp
index 82555950..5ec853ec 100644
--- a/DSView/pv/mainframe.cpp
+++ b/DSView/pv/mainframe.cpp
@@ -229,6 +229,7 @@ void MainFrame::AttachNativeWindow()
                 setVisible(true);
 
                 if (_initWndInfo.isMaxSize){
+                    _initWndInfo.isMaxSize = false;
                     showMaximized();
                 }
             });