diff --git a/sib-chat.js b/sib-chat.js
index b317e0f3c88b99d10415daa0064bcf06ff0ce679..499c7d1aa6cb69ecac819648adbf9e61257edcbc 100644
--- a/sib-chat.js
+++ b/sib-chat.js
@@ -184,7 +184,7 @@ export const SibChat = {
       'allow_non_roster_messaging': true,
       'allow_dragresize': false,
       'allow_logout': false,
-      'archived_messages_page_size': 200,
+      'archived_messages_page_size': 30,
       'auto_list_rooms': true,
       'auto_login': this.element.dataset.autoLogin === 'true',
       'auto_join_on_invite': true,
@@ -207,6 +207,7 @@ export const SibChat = {
       'show_desktop_notifications': false,
       // 'use_system_emojis': false,
       // 'show_send_button': true,
+      'singleton': true,
       'sounds_path': 'https://cdn.happy-dev.fr/conversejs/sounds/',
       'view_mode': 'fullscreen',
       'visible_toolbar_buttons': {