diff --git a/src/plugins/platforms/android/qandroidplatformscreen.cpp b/src/plugins/platforms/android/qandroidplatformscreen.cpp
index 6a83827262..1463351c77 100644
--- a/src/plugins/platforms/android/qandroidplatformscreen.cpp
+++ b/src/plugins/platforms/android/qandroidplatformscreen.cpp
@@ -158,7 +158,7 @@ void QAndroidPlatformScreen::addWindow(QAndroidPlatformWindow *window)
     }
 
     QWindow *w = topWindow();
-    QWindowSystemInterface::handleWindowActivated(w);
+    QWindowSystemInterface::handleWindowActivated(w, Qt::ActiveWindowFocusReason);
     topWindowChanged(w);
 }
 
@@ -178,7 +178,7 @@ void QAndroidPlatformScreen::removeWindow(QAndroidPlatformWindow *window)
     }
 
     QWindow *w = topWindow();
-    QWindowSystemInterface::handleWindowActivated(w);
+    QWindowSystemInterface::handleWindowActivated(w, Qt::ActiveWindowFocusReason);
     topWindowChanged(w);
 }
 
@@ -195,7 +195,7 @@ void QAndroidPlatformScreen::raise(QAndroidPlatformWindow *window)
         setDirty(window->geometry());
     }
     QWindow *w = topWindow();
-    QWindowSystemInterface::handleWindowActivated(w);
+    QWindowSystemInterface::handleWindowActivated(w, Qt::ActiveWindowFocusReason);
     topWindowChanged(w);
 }
 
@@ -212,7 +212,7 @@ void QAndroidPlatformScreen::lower(QAndroidPlatformWindow *window)
         setDirty(window->geometry());
     }
     QWindow *w = topWindow();
-    QWindowSystemInterface::handleWindowActivated(w);
+    QWindowSystemInterface::handleWindowActivated(w, Qt::ActiveWindowFocusReason);
     topWindowChanged(w);
 }
 
diff --git a/src/plugins/platforms/directfb/qdirectfbinput.cpp b/src/plugins/platforms/directfb/qdirectfbinput.cpp
index 025edb28b5..c2b4adbd16 100644
--- a/src/plugins/platforms/directfb/qdirectfbinput.cpp
+++ b/src/plugins/platforms/directfb/qdirectfbinput.cpp
@@ -209,7 +209,7 @@ void QDirectFbInput::handleEnterLeaveEvents(const DFBEvent &event)
 void QDirectFbInput::handleGotFocusEvent(const DFBEvent &event)
 {
     QWindow *tlw = m_tlwMap.value(event.window.window_id);
-    QWindowSystemInterface::handleWindowActivated(tlw);
+    QWindowSystemInterface::handleWindowActivated(tlw, Qt::ActiveWindowFocusReason);
 }
 
 void QDirectFbInput::handleCloseEvent(const DFBEvent &event)
diff --git a/src/plugins/platforms/eglfs/api/qeglfswindow.cpp b/src/plugins/platforms/eglfs/api/qeglfswindow.cpp
index b1fdba5a46..9cd1f17f5f 100644
--- a/src/plugins/platforms/eglfs/api/qeglfswindow.cpp
+++ b/src/plugins/platforms/eglfs/api/qeglfswindow.cpp
@@ -265,7 +265,7 @@ void QEglFSWindow::requestActivateWindow()
         QOpenGLCompositor::instance()->moveToTop(this);
 #endif
     QWindow *wnd = window();
-    QWindowSystemInterface::handleWindowActivated(wnd);
+    QWindowSystemInterface::handleWindowActivated(wnd, Qt::ActiveWindowFocusReason);
     QWindowSystemInterface::handleExposeEvent(wnd, QRect(QPoint(0, 0), wnd->geometry().size()));
 }
 
diff --git a/src/plugins/platforms/offscreen/qoffscreenwindow.cpp b/src/plugins/platforms/offscreen/qoffscreenwindow.cpp
index 20aae06650..1046b2a908 100644
--- a/src/plugins/platforms/offscreen/qoffscreenwindow.cpp
+++ b/src/plugins/platforms/offscreen/qoffscreenwindow.cpp
@@ -122,7 +122,7 @@ void QOffscreenWindow::setVisible(bool visible)
 
     if (visible) {
         if (window()->type() != Qt::ToolTip)
-            QWindowSystemInterface::handleWindowActivated(window());
+            QWindowSystemInterface::handleWindowActivated(window(), Qt::ActiveWindowFocusReason);
 
         if (m_pendingGeometryChangeOnShow) {
             m_pendingGeometryChangeOnShow = false;
@@ -158,7 +158,7 @@ void QOffscreenWindow::setVisible(bool visible)
 void QOffscreenWindow::requestActivateWindow()
 {
     if (m_visible)
-        QWindowSystemInterface::handleWindowActivated(window());
+        QWindowSystemInterface::handleWindowActivated(window(), Qt::ActiveWindowFocusReason);
 }
 
 WId QOffscreenWindow::winId() const
diff --git a/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp b/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
index cbcaecb580..84cfbea27d 100644
--- a/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
+++ b/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
@@ -742,7 +742,7 @@ void QQnxScreenEventHandler::handleKeyboardFocusPropertyEvent(screen_window_t wi
     }
 
     if (focus && focusWindow != QGuiApplication::focusWindow())
-        QWindowSystemInterface::handleWindowActivated(focusWindow);
+        QWindowSystemInterface::handleWindowActivated(focusWindow, Qt::ActiveWindowFocusReason);
     else if (!focus && focusWindow == QGuiApplication::focusWindow())
         m_focusLostTimer = startTimer(50);
 }
diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp
index 0538f42bec..ee461ec666 100644
--- a/src/plugins/platforms/windows/qwindowscontext.cpp
+++ b/src/plugins/platforms/windows/qwindowscontext.cpp
@@ -1457,7 +1457,7 @@ void QWindowsContext::handleFocusEvent(QtWindows::WindowsEventType et,
     }
     if (nextActiveWindow != d->m_lastActiveWindow) {
          d->m_lastActiveWindow = nextActiveWindow;
-         QWindowSystemInterface::handleWindowActivated(nextActiveWindow);
+         QWindowSystemInterface::handleWindowActivated(nextActiveWindow, Qt::ActiveWindowFocusReason);
     }
 }
 
diff --git a/tests/auto/other/qfocusevent/tst_qfocusevent.cpp b/tests/auto/other/qfocusevent/tst_qfocusevent.cpp
index cd00f4cc9c..92ab429d4a 100644
--- a/tests/auto/other/qfocusevent/tst_qfocusevent.cpp
+++ b/tests/auto/other/qfocusevent/tst_qfocusevent.cpp
@@ -369,6 +369,42 @@ void tst_QFocusEvent::checkReason_ActiveWindow()
     QVERIFY( childFocusWidgetOne->hasFocus() );
     QVERIFY( childFocusWidgetOne->focusInEventRecieved );
     QCOMPARE( childFocusWidgetOne->focusInEventReason, (int)Qt::ActiveWindowFocusReason);
+
+    const bool windowActivationReasonFail =
+        QGuiApplication::platformName().toLower() == "minimal";
+
+    struct Window : public QWindow
+    {
+        Qt::FocusReason lastReason = Qt::NoFocusReason;
+    protected:
+        void focusInEvent(QFocusEvent *event) override
+        {
+            lastReason = event->reason();
+        }
+        void focusOutEvent(QFocusEvent *event) override
+        {
+            lastReason = event->reason();
+        }
+    };
+
+    Window window;
+    window.show();
+    window.requestActivate();
+    QVERIFY(QTest::qWaitForWindowActive(&window));
+
+    if (windowActivationReasonFail)
+        QEXPECT_FAIL("", "Platform doesn't set window activation reason for QWindow", Continue);
+    QCOMPARE(window.lastReason, Qt::ActiveWindowFocusReason);
+    window.lastReason = Qt::NoFocusReason;
+
+    Window window2;
+    window2.show();
+    window2.requestActivate();
+    QVERIFY(QTest::qWaitForWindowActive(&window2));
+
+    if (windowActivationReasonFail)
+        QEXPECT_FAIL("", "Platform doesn't set window activation reason for QWindow", Continue);
+    QCOMPARE(window.lastReason, Qt::ActiveWindowFocusReason);
 }