diff --git a/manifest.toml b/manifest.toml
index 823b504..6c788e0 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -31,6 +31,10 @@ ram.runtime = "50M"
     [install.domain]
     type = "domain"
 
+    [install.init_main_permission]
+    type = "group"
+    default = "visitors"
+
     [install.admin]
     type = "user"