diff --git a/Userland/Libraries/LibGUI/Window.cpp b/Userland/Libraries/LibGUI/Window.cpp
index f5706a361c..043115666c 100644
--- a/Userland/Libraries/LibGUI/Window.cpp
+++ b/Userland/Libraries/LibGUI/Window.cpp
@@ -618,6 +618,9 @@ void Window::handle_fonts_change_event(FontsChangeEvent& event)
 
     if (is_auto_shrinking())
         schedule_relayout();
+
+    if (on_font_change)
+        on_font_change();
 }
 
 void Window::handle_screen_rects_change_event(ScreenRectsChangeEvent& event)
diff --git a/Userland/Libraries/LibGUI/Window.h b/Userland/Libraries/LibGUI/Window.h
index e3f055bd68..676427fc53 100644
--- a/Userland/Libraries/LibGUI/Window.h
+++ b/Userland/Libraries/LibGUI/Window.h
@@ -99,6 +99,7 @@ public:
         Close,
     };
 
+    Function<void()> on_font_change;
     Function<void()> on_close;
     Function<CloseRequestDecision()> on_close_request;
     Function<void(bool is_preempted)> on_input_preemption_change;