diff --git a/src/calibre/gui2/central.py b/src/calibre/gui2/central.py
index dbd82bc588..150e72d3f1 100644
--- a/src/calibre/gui2/central.py
+++ b/src/calibre/gui2/central.py
@@ -49,15 +49,11 @@ class LayoutButton(QToolButton):
         if self.shortcut is not None:
             self.action_toggle = QAction(self.icon(), _('Toggle') + ' ' + self.label, self)
             self.action_toggle.changed.connect(self.update_shortcut)
-            self.action_toggle.triggered.connect(self.toggle_triggered)
+            self.action_toggle.triggered.connect(self.toggle)
             gui.addAction(self.action_toggle)
             gui.keyboard.register_shortcut(
                 f'toggle_central_panel_{self.name}', self.action_toggle.text(), default_keys=(self.shortcut,), action=self.action_toggle)
 
-    def toggle_triggered(self):
-        self.toggle()
-        self.on_action_trigger.emit(self.isChecked())
-
     @property
     def is_visible(self):
         return getattr(self.central.is_visible, self.name)
diff --git a/src/calibre/gui2/cover_flow.py b/src/calibre/gui2/cover_flow.py
index 833b20eed8..65cb3ffb2b 100644
--- a/src/calibre/gui2/cover_flow.py
+++ b/src/calibre/gui2/cover_flow.py
@@ -366,9 +366,8 @@ class CoverFlowMixin:
         self.update_cover_flow_subtitle_font()
         button = self.cb_button
         if self.separate_cover_browser:
-            button.clicked.connect(self.toggle_cover_browser)
+            button.toggled.connect(self.toggle_cover_browser)
             button.set_state_to_show()
-            button.on_action_trigger.connect(self.toggle_cover_browser)
             self.cover_flow.stop.connect(self.hide_cover_browser)
             self.cover_flow.setVisible(False)
         else: