diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp
index 367cee70e3c..91eb7bdb884 100644
--- a/src/gui/kernel/qwindow.cpp
+++ b/src/gui/kernel/qwindow.cpp
@@ -597,6 +597,11 @@ bool QWindow::isActive() const
         return false;
 
     QWindow *focus = QGuiApplication::focusWindow();
+
+    // Means the whole application lost the focus
+    if (!focus)
+        return false;
+
     if (focus == this)
         return true;