diff --git a/src/mainwindow.cc b/src/mainwindow.cc
index c2a17be..a64eba5 100644
--- a/src/mainwindow.cc
+++ b/src/mainwindow.cc
@@ -6,6 +6,7 @@
 #include "file.h"
 #include <gtkmm/menuitem.h>
 #include <gtkmm/image.h>
+#include <gtkmm/listboxrow.h>
 #include <giomm/file.h>
 #include <glibmm/fileutils.h>
 #include <glibmm/miscutils.h>
@@ -43,6 +44,7 @@ MainWindow::MainWindow(const std::string &timeout)
       m_spacingLabel("Spacing"),
       m_marginsLabel("Margins"),
       m_indentLabel("Indent"),
+      m_iconThemeLabel("Select Icon Theme:"),
       m_appName("LibreWeb Browser"),
       m_iconTheme("flat"),             // filled or flat
       m_useCurrentGTKIconTheme(false), // Use our built-in icon theme or the GTK icons
@@ -281,10 +283,27 @@ void MainWindow::initSettingsPopover()
     iconThemeButtonlabel->set_xalign(0.0);
     aboutButtonLabel->set_xalign(0.0);
 
-    m_iconThemeBackButton.set_label("Main menu");
+    // Submenu: back button
+    m_iconThemeBackButton.set_label("Back to Settings");
     m_iconThemeBackButton.property_menu_name() = "main";
     m_iconThemeBackButton.property_inverted() = true;
+    // List box
+    Gtk::Label *label = Gtk::manage(new Gtk::Label("Bla"));
+    Gtk::ListBoxRow *row = Gtk::manage(new Gtk::ListBoxRow());
+    row->add(*label);
+    Gtk::Label *label2 = Gtk::manage(new Gtk::Label("Hello"));
+    Gtk::ListBoxRow *row2 = Gtk::manage(new Gtk::ListBoxRow());
+    row2->add(*label2);
+    m_iconThemeListBox.add(*row);
+    m_iconThemeListBox.add(*row2);
+    m_iconThemeListScrolledWindow.property_height_request() = 200;
+    m_iconThemeListScrolledWindow.add(m_iconThemeListBox);
+    auto iconThemeLabelContext = m_iconThemeLabel.get_style_context();
+    iconThemeLabelContext->add_class("dim-label");
     m_vboxIconTheme.add(m_iconThemeBackButton);
+    m_vboxIconTheme.add(m_separator8);
+    m_vboxIconTheme.add(m_iconThemeLabel);
+    m_vboxIconTheme.add(m_iconThemeListScrolledWindow);
     m_settingsPopover.add(m_vboxIconTheme);
     m_settingsPopover.child_property_submenu(m_vboxIconTheme) = "icon-theme";
 
diff --git a/src/mainwindow.h b/src/mainwindow.h
index f353c82..1244384 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -10,6 +10,7 @@
 #include <gtkmm/window.h>
 #include <gtkmm/cssprovider.h>
 #include <gtkmm/box.h>
+#include <gtkmm/listbox.h>
 #include <gtkmm/menubar.h>
 #include <gtkmm/scrolledwindow.h>
 #include <gtkmm/button.h>
@@ -19,7 +20,6 @@
 #include <gtkmm/modelbutton.h>
 #include <gtkmm/fontbutton.h>
 #include <gtkmm/comboboxtext.h>
-#include <gtkmm/popover.h>
 #include <gtkmm/popovermenu.h>
 #include <gtkmm/grid.h>
 #include <gtkmm/scale.h>
@@ -120,6 +120,8 @@ protected:
     Gtk::Box m_hboxSetingsZoom;
     Gtk::Box m_hboxSetingsBrightness;
     Gtk::Box m_vboxIconTheme;
+    Gtk::ScrolledWindow m_iconThemeListScrolledWindow;
+    Gtk::ListBox m_iconThemeListBox;
     Gtk::Scale m_scaleSettingsBrightness;
     Gtk::Entry m_addressBar;
     Gtk::ToggleButton m_searchMatchCase;
@@ -197,14 +199,15 @@ protected:
     Gtk::Image m_numberedListIcon;
     Gtk::Image m_hightlightIcon;
     Gtk::Image m_exitBottomIcon;
-    Gtk::Popover m_statusPopover;
-    Gtk::PopoverMenu m_settingsPopover; // Move to PopoverMenu, so I'm able to add submenu's !?
+    Gtk::PopoverMenu m_statusPopover;
+    Gtk::PopoverMenu m_settingsPopover;
     Gtk::Button m_copyIDButton;
     Gtk::Button m_copyPublicKeyButton;
     Gtk::Label m_fontLabel;
     Gtk::Label m_spacingLabel;
     Gtk::Label m_marginsLabel;
     Gtk::Label m_indentLabel;
+    Gtk::Label m_iconThemeLabel;
     Gtk::Label m_statusLabel;
     std::unique_ptr<Gtk::MessageDialog> m_contentPublishedDialog;
     Gtk::ScrolledWindow m_scrolledWindowMain;
@@ -217,6 +220,7 @@ protected:
     Gtk::Separator m_separator5;
     Gtk::Separator m_separator6;
     Gtk::Separator m_separator7;
+    Gtk::Separator m_separator8;
 
 private:
     std::string m_appName;