diff --git a/manifest.json b/manifest.json
index 919e288..99c31da 100644
--- a/manifest.json
+++ b/manifest.json
@@ -44,6 +44,10 @@
             {
                 "name": "is_public",
                 "type": "boolean",
+                "help": {
+                    "en": "If enabled, Plainpad 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, Plainpad sera accessible aux personnes n’ayant pas de compte. Vous pourrez changer ceci plus tard via la webadmin."
+                },
                 "default": true
             }
         ]