diff --git a/qtsingleapplication/src/qtsingleapplication.cpp b/qtsingleapplication/src/qtsingleapplication.cpp
index d0fb15d7..064c6a8f 100644
--- a/qtsingleapplication/src/qtsingleapplication.cpp
+++ b/qtsingleapplication/src/qtsingleapplication.cpp
@@ -323,9 +323,9 @@ QWidget* QtSingleApplication::activationWindow() const
 void QtSingleApplication::activateWindow()
 {
     if (actWin) {
-        actWin->setWindowState(actWin->windowState() & ~Qt::WindowMinimized);
-        actWin->raise();
+        actWin->setWindowFlags(Qt::Window);
         actWin->activateWindow();
+        actWin->show();
     }
 }