diff --git a/Libraries/LibGUI/Window.cpp b/Libraries/LibGUI/Window.cpp
index 067344785f..8555bc76d0 100644
--- a/Libraries/LibGUI/Window.cpp
+++ b/Libraries/LibGUI/Window.cpp
@@ -406,8 +406,6 @@ void Window::handle_input_entered_or_left_event(Core::Event& event)
 void Window::handle_became_active_or_inactive_event(Core::Event& event)
 {
     m_is_active = event.type() == Event::WindowBecameActive;
-    if (on_activity_change)
-        on_activity_change(m_is_active);
     if (m_main_widget)
         m_main_widget->dispatch_event(event, this);
     if (m_focused_widget)
diff --git a/Libraries/LibGUI/Window.h b/Libraries/LibGUI/Window.h
index 44c7af1d5c..f132aa5eaf 100644
--- a/Libraries/LibGUI/Window.h
+++ b/Libraries/LibGUI/Window.h
@@ -87,7 +87,6 @@ public:
     Function<void()> on_close;
     Function<CloseRequestDecision()> on_close_request;
     Function<void(bool is_active_input)> on_active_input_change;
-    Function<void(const bool is_active)> on_activity_change;
 
     int x() const { return rect().x(); }
     int y() const { return rect().y(); }