diff --git a/ghost/limit-service/lib/limit.js b/ghost/limit-service/lib/limit.js
index f53ad7a5f3..b029ebfd50 100644
--- a/ghost/limit-service/lib/limit.js
+++ b/ghost/limit-service/lib/limit.js
@@ -46,8 +46,8 @@ class MaxLimit extends Limit {
      * @param {Number} options.config.max - maximum limit the limit would check against
      * @param {Function} options.config.currentCountQuery - query checking the state that would be compared against the limit
      * @param {String} [options.config.error] - error message to use when limit is reached
-     * @param {String} options.helpLink - URL to the resource explaining how the limit works
-     * @param {Object} options.db - instance of knex db connection that currentCountQuery can use to run state check through
+     * @param {String} [options.helpLink] - URL to the resource explaining how the limit works
+     * @param {Object} [options.db] - instance of knex db connection that currentCountQuery can use to run state check through
      * @param {Object} options.errors - instance of errors compatible with Ghost-Ignition's errors (https://github.com/TryGhost/Ignition#errors)
      */
     constructor({name, config, helpLink, db, errors}) {
@@ -136,7 +136,7 @@ class MaxPeriodicLimit extends Limit {
      * @param {('month')} options.config.interval - an interval to take into account when checking the limit. Currently only supports 'month' value
      * @param {String} options.config.startDate - start date in ISO 8601 format (https://en.wikipedia.org/wiki/ISO_8601), used to calculate period intervals
      * @param {String} options.helpLink - URL to the resource explaining how the limit works
-     * @param {Object} options.db - instance of knex db connection that currentCountQuery can use to run state check through
+     * @param {Object} [options.db] - instance of knex db connection that currentCountQuery can use to run state check through
      * @param {Object} options.errors - instance of errors compatible with Ghost-Ignition's errors (https://github.com/TryGhost/Ignition#errors)
      */
     constructor({name, config, helpLink, db, errors}) {
@@ -238,7 +238,7 @@ class FlagLimit extends Limit {
      * @param {Number} options.config.disabled - disabled/enabled flag for the limit
      * @param {String} options.config.error - error message to use when limit is reached
      * @param {String} options.helpLink - URL to the resource explaining how the limit works
-     * @param {Object} options.db - instance of knex db connection that currentCountQuery can use to run state check through
+     * @param {Object} [options.db] - instance of knex db connection that currentCountQuery can use to run state check through
      * @param {Object} options.errors - instance of errors compatible with Ghost-Ignition's errors (https://github.com/TryGhost/Ignition#errors)
      */
     constructor({name, config, helpLink, db, errors}) {