diff --git a/Userland/Services/WindowServer/WindowFrame.cpp b/Userland/Services/WindowServer/WindowFrame.cpp
index 6bb3c35394..b9d40796e7 100644
--- a/Userland/Services/WindowServer/WindowFrame.cpp
+++ b/Userland/Services/WindowServer/WindowFrame.cpp
@@ -163,7 +163,7 @@ void WindowFrame::reload_config()
     load_shadow(WindowManager::the().palette().tooltip_shadow_path(), s_last_tooltip_shadow_path, s_tooltip_shadow);
 }
 
-MultiScaleBitmaps* WindowFrame::shadow_bitmap() const
+MultiScaleBitmaps const* WindowFrame::shadow_bitmap() const
 {
     if (m_window.is_frameless() && !m_window.has_forced_shadow())
         return nullptr;
diff --git a/Userland/Services/WindowServer/WindowFrame.h b/Userland/Services/WindowServer/WindowFrame.h
index c91df5dbdc..9e37b8b34f 100644
--- a/Userland/Services/WindowServer/WindowFrame.h
+++ b/Userland/Services/WindowServer/WindowFrame.h
@@ -124,7 +124,7 @@ private:
     void paint_normal_frame(Gfx::Painter&);
     void paint_tool_window_frame(Gfx::Painter&);
     void paint_menubar(Gfx::Painter&);
-    MultiScaleBitmaps* shadow_bitmap() const;
+    MultiScaleBitmaps const* shadow_bitmap() const;
     Gfx::IntRect inflated_for_shadow(const Gfx::IntRect&) const;
 
     void handle_menubar_mouse_event(const MouseEvent&);