diff --git a/manifest.json b/manifest.json
index e7f2f46..abe21ba 100644
--- a/manifest.json
+++ b/manifest.json
@@ -70,7 +70,20 @@
 					"fr": "N'activer que si vous connaissez les prérequis et constraintes liées à e2b."
 				},
 				"default": false
-			},			
+			},
+			{
+				"name": "bot_synapse_adm",
+				"type": "boolean",
+				"ask": {
+					"en": "Give the Telegram bot administrator rights to the synapse instance?",
+					"fr": "Donner au robot Telegram des droits administrateur à l'instance synapse ?"
+				},
+				"help": {
+					"en": "If true, the bot can group Telegram chats in a Matrix community. Not required if you set up synapse so that non-admins are authorized to create communities.",
+					"fr": "Si true, le robot groupera les conversations Telegram dans une communauté Matrix. Pas nécessaire si vous avez réglé synapse pour qu'il autorise les non-admin à créer des communautés."
+				},
+				"default": true
+			},
 			{
 				"name": "botadmin",
 				"type": "string",
diff --git a/scripts/install b/scripts/install
index ffb4686..1b05268 100755
--- a/scripts/install
+++ b/scripts/install
@@ -29,6 +29,7 @@ botname=$YNH_APP_ARG_BOTNAME
 encryption=$YNH_APP_ARG_ENCRYPTION
 botadmin=$YNH_APP_ARG_BOTADMIN
 botusers=$YNH_APP_ARG_BOTUSERS
+bot_synapse_adm=$YNH_APP_ARG_BOT_SYNAPSE_ADM
 
 # TODO new settings specific to telegram
 apiid=$YNH_APP_ARG_APIID
@@ -90,6 +91,7 @@ ynh_app_setting_set --app=$app --key=server_name --value=$server_name
 ynh_app_setting_set --app=$app --key=port --value=$port
 ynh_app_setting_set --app=$app --key=botname --value=$botname
 ynh_app_setting_set --app=$app --key=synapse_instance --value=$synapse_instance
+ynh_app_setting_set --app=$app --key=bot_synapse_adm --value=$bot_synapse_adm
 ynh_app_setting_set --app=$app --key=app_service_registration_path --value=$app_service_registration_path
 ynh_app_setting_set --app=$app --key=encryption --value=$encryption
 ynh_app_setting_set --app=$app --key=mautrix_bridge_db_name --value=$mautrix_bridge_db_name
@@ -256,12 +258,12 @@ ynh_script_progression --message="Starting a systemd service..." --weight=1
 ynh_systemd_action --service_name=$app --action="start"
 # Wait until the synapse user is created
 sleep 30
-#    # (Note that, by default, non-admins might not have your homeserver's permission to create communities.)
-#    if [ "$bot_is_synapse_admin" = true ]
-#    then
+    # (Note that, by default, non-admins might not have your homeserver's permission to create communities.)
+    if [ "$bot_synapse_adm" = true ]
+    then
     ynh_psql_execute_as_root --database=$synapse_db_name --sql="UPDATE users SET admin = 1 WHERE name = ""$botname"";"
-#    #yunohost app action run $synapse_instance set_admin_user -a username=$botname
-#    fi
+    #yunohost app action run $synapse_instance set_admin_user -a username=$botname
+    fi
 ynh_systemd_action --service_name=$app --action="restart"
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 8536cfa..864f9ae 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -53,11 +53,12 @@ ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 # some legacy installs and you therefore want to initiaze stuff during upgrade)
 #
 
-# If db_name doesn't exist, create it
-#if [ -z "$db_name" ]; then
-#	db_name=$(ynh_sanitize_dbid --db_name=$app)
-#	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-#fi
+bot_synapse_adm=$(ynh_app_setting_get --app=$app --key=bot_synapse_adm)
+# If bot_synapse_adm doesn't exist, create it
+if [ -z "$bot_synapse_adm" ]; then
+  bot_synapse_adm=true
+  ynh_app_setting_set --app=$app --key=bot_synapse_adm --value=$bot_synapse_adm
+fi
 
 # If final_path doesn't exist, create it
 #if [ -z "$final_path" ]; then