diff --git a/scripts/install b/scripts/install
index 29f9805..ad94c8c 100644
--- a/scripts/install
+++ b/scripts/install
@@ -53,7 +53,6 @@ ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
 ynh_app_setting_set --app=$app --key=admin --value=$admin
 ynh_app_setting_set --app=$app --key=admin_password --value=$admin_password
-ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 ynh_app_setting_set --app=$app --key=language --value=$language
 ynh_app_setting_set --app=$app --key=wiki_name --value=$wiki_name
 
@@ -181,6 +180,8 @@ ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string=
 
 chown -R $app:www-data "$final_path"
 
+#=================================================
+# GENERIC FINALIZATION
 #=================================================
 # SETUP SSOWAT
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 989eb36..f258818 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -19,23 +19,15 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 admin=$(ynh_app_setting_get --app=$app --key=admin)
-is_public=$(ynh_app_setting_get --app="$app" --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 language=$(ynh_app_setting_get --app=$app --key=language)
-wiki_name=$(ynh_app_setting_get --app=$app --key=wiki_name)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
-
-# Note(decentral1se): avoid using this on upgrade for the versions
-# of the application that upgrade and have not stored this in their
-# settings (when it was not available to them). Later on, when we have
-# moved a few versions on, we can re-enable this
-# wiki_name=$(ynh_app_setting_get --app=$app --key=wiki_name)
+wiki_name=$(ynh_app_setting_get --app=$app --key=wiki_name)
 
 #=================================================
 # CHECK VERSION
 #=================================================
-ynh_script_progression --message="Checking version..."
 
 upgrade_type=$(ynh_check_app_version_changed)
 
@@ -60,30 +52,33 @@ ynh_abort_if_errors
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
-# Fix is_public as a boolean value
-if [ "$is_public" = "Yes" ]; then
-    ynh_app_setting_set --app=$app --key=is_public --value=1
-    is_public=1
-elif [ "$is_public" = "No" ]; then
-    ynh_app_setting_set --app=$app --key=is_public --value=0
-    is_public=0
-fi
-
 # 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="$db_name"
+	db_name=$(ynh_sanitize_dbid --db_name=$app)
+	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
 fi
 
 # If final_path doesn't exist, create it
 if [ -z "$final_path" ]; then
-    final_path="/var/www/$app"
-    ynh_app_setting_set --app=$app --key=final_path --value="$final_path"
+	final_path=/var/www/$app
+	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
 # Cleaning legacy permissions
 if ynh_legacy_permissions_exists; then
 	ynh_legacy_permissions_delete_all
+
+	ynh_app_setting_delete --app=$app --key=is_public
+fi
+
+if ! ynh_permission_exists --permission="admin"; then
+	# Create the required permissions
+	ynh_permission_create --permission="admin" --url="/admin" --allowed=$admin
+fi
+
+# Create a permission if needed
+if ! ynh_permission_exists --permission="api"; then
+	ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --show_tile="false" --protected="true"
 fi
 
 #=================================================