diff --git a/src/modules/TimerOndemand.js b/src/modules/TimerOndemand.js
index f0ef1a4..aecf5fa 100644
--- a/src/modules/TimerOndemand.js
+++ b/src/modules/TimerOndemand.js
@@ -194,8 +194,8 @@ Signals.addSignalMethods(TimerOndemand.prototype);
 
 var NtsPanelMenuButton = GObject.registerClass(
     class NtsPanelMenuButton extends PanelMenuButton {
-        _init() {
-            super._init(0.0);
+        constructor() {
+            super(0.0);
             this.icon = new St.Icon({
                 style_class: 'system-status-icon',
             });
@@ -213,8 +213,8 @@ var NtsPanelMenuButton = GObject.registerClass(
 
 var NtsPopupMenuItem = GObject.registerClass(
     class NtsPopupMenuItem extends PopupBaseMenuItem {
-        _init(params) {
-            super._init(params);
+        constructor(params) {
+            super(params);
             this.icon = new St.Icon({
                 style_class: 'popup-menu-icon',
                 x_align: Clutter.ActorAlign.END,
diff --git a/src/preferences/BackgroundsPage.js b/src/preferences/BackgroundsPage.js
index 4cc94f1..6eeb013 100644
--- a/src/preferences/BackgroundsPage.js
+++ b/src/preferences/BackgroundsPage.js
@@ -15,8 +15,8 @@ var BackgroundsPage = GObject.registerClass({
         'night_button',
     ],
 }, class BackgroundsPage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const settings = new Gio.Settings({ schema: 'org.gnome.desktop.background' });
 
         settings.bind('picture-uri', this._day_button, 'path', Gio.SettingsBindFlags.DEFAULT);
diff --git a/src/preferences/CommandsPage.js b/src/preferences/CommandsPage.js
index 918399f..24a7ed6 100644
--- a/src/preferences/CommandsPage.js
+++ b/src/preferences/CommandsPage.js
@@ -18,8 +18,8 @@ var CommandsPage = GObject.registerClass({
         'sunset_entry',
     ],
 }, class CommandsPage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const settings = extensionUtils.getSettings(utils.getSettingsSchema('commands'));
 
         settings.bind('enabled', this._enabled_switch, 'active', Gio.SettingsBindFlags.DEFAULT);
diff --git a/src/preferences/SchedulePage.js b/src/preferences/SchedulePage.js
index 9134583..097f78f 100644
--- a/src/preferences/SchedulePage.js
+++ b/src/preferences/SchedulePage.js
@@ -29,8 +29,8 @@ var SchedulePage = GObject.registerClass({
         'ondemand_preferences_group',
     ],
 }, class SchedulePage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const settings = extensionUtils.getSettings(utils.getSettingsSchema('time'));
         const colorSettings = new Gio.Settings({ schema: 'org.gnome.settings-daemon.plugins.color' });
         const locationSettings = new Gio.Settings({ schema: 'org.gnome.system.location' });
diff --git a/src/preferences/ThemesPage.js b/src/preferences/ThemesPage.js
index 7c2d1b3..cb2ab8b 100644
--- a/src/preferences/ThemesPage.js
+++ b/src/preferences/ThemesPage.js
@@ -30,8 +30,8 @@ var ThemesPage = GObject.registerClass({
         'cursor_night_variant_combo_row',
     ],
 }, class ThemesPage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const gtkSettings = extensionUtils.getSettings(utils.getSettingsSchema('gtk-variants'));
         const shellSettings = extensionUtils.getSettings(utils.getSettingsSchema('shell-variants'));
         const iconSettings = extensionUtils.getSettings(utils.getSettingsSchema('icon-variants'));