diff --git a/editor/themes/theme_classic.cpp b/editor/themes/theme_classic.cpp
index 1333495253e..738c06b7524 100644
--- a/editor/themes/theme_classic.cpp
+++ b/editor/themes/theme_classic.cpp
@@ -1523,6 +1523,7 @@ void ThemeClassic::populate_editor_styles(const Ref<EditorTheme> &p_theme, Edito
 
 		p_theme->set_stylebox("panel_container", "ProjectManager", style_panel_container);
 		p_theme->set_stylebox("project_list", "ProjectManager", p_config.tree_panel_style);
+		p_theme->set_stylebox("quick_settings_panel", "ProjectManager", p_config.tree_panel_style);
 		p_theme->set_constant("sidebar_button_icon_separation", "ProjectManager", int(6 * EDSCALE));
 		p_theme->set_icon("browse_folder", "ProjectManager", p_theme->get_icon(SNAME("FolderBrowse"), EditorStringName(EditorIcons)));
 		p_theme->set_icon("browse_file", "ProjectManager", p_theme->get_icon(SNAME("FileBrowse"), EditorStringName(EditorIcons)));