diff --git a/Userland/Applications/ThemeEditor/PreviewWidget.cpp b/Userland/Applications/ThemeEditor/PreviewWidget.cpp
index ff4443d30d..74fd984d2d 100644
--- a/Userland/Applications/ThemeEditor/PreviewWidget.cpp
+++ b/Userland/Applications/ThemeEditor/PreviewWidget.cpp
@@ -41,7 +41,6 @@ public:
 private:
     MiniWidgetGallery()
     {
-        set_fill_with_background_color(true);
         m_button = add<GUI::Button>();
         m_button->set_text("Button");
         m_checkbox = add<GUI::CheckBox>();
@@ -145,6 +144,8 @@ void PreviewWidget::paint_event(GUI::PaintEvent& event)
             button.rect = rect;
         }
 
+        painter.fill_rect(rect, m_preview_palette.window());
+
         auto frame_rect = Gfx::WindowTheme::current().frame_rect_for_window(Gfx::WindowTheme::WindowType::Normal, rect, m_preview_palette, 0);
         Gfx::PainterStateSaver saver(painter);
         painter.translate(frame_rect.location());