diff --git a/po/rounded-window-corners@yilozt.pot b/po/rounded-window-corners@yilozt.pot
index 12a1190..b846568 100644
--- a/po/rounded-window-corners@yilozt.pot
+++ b/po/rounded-window-corners@yilozt.pot
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Report-Msgid-Bugs-To: yilozt@outlook.com\n"
-"Project-Id-Version: 11\n"
+"Project-Id-Version: 12\n"
 
 #: src/preferences/pages/general.ui:284
 msgid "Add Settings Entry in right-click menu of Background"
@@ -183,7 +183,7 @@ msgid "Right"
 msgstr ""
 
 #: src/utils/ui.ts:103
-#: src/utils/ui.ts:131
+#: src/utils/ui.ts:132
 msgid "Rounded Corners Settings..."
 msgstr ""
 
diff --git a/src/preferences/pages/general.ts b/src/preferences/pages/general.ts
index a7b8531..c3ae795 100644
--- a/src/preferences/pages/general.ts
+++ b/src/preferences/pages/general.ts
@@ -8,7 +8,6 @@ import { settings } from '../../utils/settings.js'
 import { SchemasKeys } from '../../utils/settings.js'
 import { connections } from '../../utils/connections.js'
 import { list_children } from '../../utils/prefs.js'
-import { _log } from '../../utils/log.js'
 import { RoundedCornersItem } from '../widgets/rounded_corners_item.js'
 import { EditShadowWindow } from '../widgets/edit_shadow_window.js'
 import { ResetDialog } from '../widgets/reset_dialog.js'
@@ -157,18 +156,6 @@ export const General = GObject.registerClass (
       })
     }
 
-    vfunc_root (): void {
-      super.vfunc_root ()
-      const win = this.root as Gtk.Window
-
-      // Disconnect all signal when close prefs
-      win.connect ('close-request', () => {
-        _log ('Disconnect Signals')
-        connections.get ().disconnect_all ()
-        connections.del ()
-      })
-    }
-
     private build_ui () {
       list_children (this.config_items).forEach ((i) => {
         this.config_items.remove (i)
diff --git a/src/prefs.ts b/src/prefs.ts
index c5bcb4b..7934482 100644
--- a/src/prefs.ts
+++ b/src/prefs.ts
@@ -2,8 +2,10 @@ import * as Gtk from 'gi://Gtk'
 import * as Gdk from 'gi://Gdk'
 import * as Adw from 'gi://Adw'
 
-import { init_settings } from './utils/settings.js'
+import { connections } from './utils/connections.js'
+import { init_settings, uninit_settings } from './utils/settings.js'
 import { pages } from './preferences/index.js'
+import { _log } from './utils/log.js'
 import * as Utils from './utils/io.js'
 import { ExtensionPreferences } from 'resource:///org/gnome/Shell/Extensions/js/extensions/prefs.js'
 
@@ -40,6 +42,14 @@ export default class RoundedWindowCornresPrefs extends ExtensionPreferences {
       win.add (pref_page)
     }
 
+    // Disconnect all signal when close prefs
+    win.connect ('close-request', () => {
+      _log ('Disconnect Signals')
+      connections.get ().disconnect_all ()
+      connections.del ()
+      uninit_settings ()
+    })
+
     this._load_css ()
   }
 }
diff --git a/src/utils/settings.ts b/src/utils/settings.ts
index 5ef5902..15924b2 100644
--- a/src/utils/settings.ts
+++ b/src/utils/settings.ts
@@ -203,6 +203,10 @@ export class Settings {
 
     log (`[RoundedWindowCorners] Update Settings to v${VERSION}`)
   }
+
+  _disable () {
+    (this.g_settings as Gio.Settings | null) = null
+  }
 }
 
 /** A singleton instance of Settings */
@@ -212,6 +216,11 @@ export const init_settings = (g_settings: Gio.Settings) => {
   _settings = new Settings (g_settings)
 }
 
+export const uninit_settings = () => {
+  _settings?._disable ()
+  ;(_settings as Settings | null) = null
+}
+
 /** Access _settings by this method */
 export const settings = () => {
   return _settings