diff --git a/manifest.json b/manifest.json
index 2a289b2..eb6759c 100644
--- a/manifest.json
+++ b/manifest.json
@@ -44,8 +44,8 @@
                 "name": "is_public",
                 "type": "boolean",
                 "help": {
-                    "en": "If enabled, Rocket.Chat will be accessible by people who do not have an account. This can be changed later via the webadmin.",
-                    "fr": "Si cette case est cochée, Rocket.Chat sera accessible aux personnes n’ayant pas de compte. Vous pourrez changer ceci plus tard via la webadmin."
+                    "en": "You must activate public site if you want to connect a Mobile or desktop client to Rocket.Chat. This can be changed later via the webadmin.",
+                    "fr": "Vous devez activer site public si vous souhaitez connecter un client mobile ou desktop à Rocket.Chat. Vous pourrez changer ceci plus tard via la webadmin."
                 },
                 "default": true
             },