diff --git a/extensions/window-list/Makefile.am b/extensions/window-list/Makefile.am
index 42470a90..48d71def 100644
--- a/extensions/window-list/Makefile.am
+++ b/extensions/window-list/Makefile.am
@@ -1,4 +1,6 @@
 EXTENSION_ID = window-list
 
+EXTRA_MODULES = prefs.js
+
 include ../../extension.mk
 include ../../settings.mk
diff --git a/extensions/window-list/prefs.js b/extensions/window-list/prefs.js
new file mode 100644
index 00000000..4b9cef0e
--- /dev/null
+++ b/extensions/window-list/prefs.js
@@ -0,0 +1,80 @@
+// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
+
+const GObject = imports.gi.GObject;
+const Gtk = imports.gi.Gtk;
+const Lang = imports.lang;
+
+const Gettext = imports.gettext.domain('gnome-shell-extensions');
+const _ = Gettext.gettext;
+
+const ExtensionUtils = imports.misc.extensionUtils;
+const Me = ExtensionUtils.getCurrentExtension();
+const Convenience = Me.imports.convenience;
+
+
+function init() {
+    Convenience.initTranslations();
+}
+
+const WindowListPrefsWidget = new GObject.Class({
+    Name: 'WindowList.Prefs.Widget',
+    GTypeName: 'WindowListPrefsWidget',
+    Extends: Gtk.Frame,
+
+    _init: function(params) {
+        this.parent(params);
+
+        this.shadow_type = Gtk.ShadowType.NONE;
+        this.margin = 24;
+
+        let title = '<b>' + _("Window Grouping") + '</b>';
+        let titleLabel = new Gtk.Label({ use_markup: true, label: title });
+        this.set_label_widget(titleLabel);
+
+        let align = new Gtk.Alignment({ left_padding: 12 });
+        this.add(align);
+
+        let grid = new Gtk.Grid({ orientation: Gtk.Orientation.VERTICAL,
+                                  row_spacing: 6,
+                                  column_spacing: 6,
+                                  margin_top: 6 });
+        align.add(grid);
+
+        this._settings = Convenience.getSettings();
+        let currentMode = this._settings.get_string('grouping-mode');
+        let range = this._settings.get_range('grouping-mode');
+        let modes = range.deep_unpack()[1].deep_unpack();
+
+        let modeLabels = {
+            'never': _("Never group windows"),
+            'always': _("Always group windows")
+        };
+
+        let radio = null;
+        for (let i = 0; i < modes.length; i++) {
+            let mode = modes[i];
+            let label = modeLabels[mode];
+            if (!label) {
+               log('Unhandled option "%s" for grouping-mode'.format(mode));
+               continue;
+            }
+
+            radio = new Gtk.RadioButton({ group: radio,
+                                          label: label,
+                                          active: currentMode == mode });
+            grid.add(radio);
+
+            radio.connect('toggled', Lang.bind(this, function(button) {
+                if (button.active)
+                    this._settings.set_string('grouping-mode', mode);
+            }));
+        }
+    }
+});
+
+function buildPrefsWidget() {
+    let widget = new WindowListPrefsWidget();
+    widget.show_all();
+
+    return widget;
+}