diff --git a/src/calibre/gui2/preferences/look_feel.py b/src/calibre/gui2/preferences/look_feel.py
index de6a5fa16f..925f38fff6 100644
--- a/src/calibre/gui2/preferences/look_feel.py
+++ b/src/calibre/gui2/preferences/look_feel.py
@@ -635,7 +635,6 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         self.sections_view.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
         self.tabWidget.currentWidget().setFocus(Qt.FocusReason.OtherFocusReason)
         self.opt_ui_style.currentIndexChanged.connect(self.update_color_palette_state)
-        self.update_color_palette_state()
 
     def update_color_palette_state(self):
         if self.ui_style_available:
@@ -752,6 +751,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         self.opt_book_details_css.setPlainText(P('templates/book_details.css', data=True).decode('utf-8'))
         self.opt_book_details_css.blockSignals(False)
         self.tb_focus_label.setVisible(self.opt_tag_browser_allow_keyboard_focus.isChecked())
+        self.update_color_palette_state()
 
     def open_cg_cache(self):
         open_local_file(self.gui.grid_view.thumbnail_cache.location)