diff --git a/js/dbusServices/extensions/extensionPrefsDialog.js b/js/dbusServices/extensions/extensionPrefsDialog.js
index 6c1b5d508..50b2e92f5 100644
--- a/js/dbusServices/extensions/extensionPrefsDialog.js
+++ b/js/dbusServices/extensions/extensionPrefsDialog.js
@@ -9,6 +9,9 @@ import Gtk from 'gi://Gtk?version=4.0';
 
 export const ExtensionPrefsDialog = GObject.registerClass({
     GTypeName: 'ExtensionPrefsDialog',
+    Signals: {
+        'loaded': {},
+    },
 }, class ExtensionPrefsDialog extends Adw.PreferencesWindow {
     _init(extension) {
         super._init({
@@ -21,7 +24,7 @@ export const ExtensionPrefsDialog = GObject.registerClass({
         this._loadPrefs().catch(e => {
             this._showErrorPage(e);
             logError(e, 'Failed to open preferences');
-        });
+        }).finally(() => this.emit('loaded'));
     }
 
     async _loadPrefs() {
diff --git a/js/dbusServices/extensions/extensionsService.js b/js/dbusServices/extensions/extensionsService.js
index 0d60fb60e..f3f8f4156 100644
--- a/js/dbusServices/extensions/extensionsService.js
+++ b/js/dbusServices/extensions/extensionsService.js
@@ -137,6 +137,8 @@ export const ExtensionsService = class extends ServiceImplementation {
             const extension = extensionManager.createExtensionObject(serialized);
 
             this._prefsDialog = new ExtensionPrefsDialog(extension);
+            this._prefsDialog.connect('loaded',
+                () => this._prefsDialog.show());
             this._prefsDialog.connect('realize', () => {
                 let externalWindow = null;
 
@@ -157,8 +159,6 @@ export const ExtensionsService = class extends ServiceImplementation {
             });
             this.hold();
 
-            this._prefsDialog.show();
-
             invocation.return_value(null);
         } catch (error) {
             this._handleError(invocation, error);