diff --git a/DatePicker/DatePicker.js b/DatePicker/DatePicker.js
index cfb30ff688..a036855682 100644
--- a/DatePicker/DatePicker.js
+++ b/DatePicker/DatePicker.js
@@ -161,7 +161,7 @@ const DatePicker = Pure(
  * @function
  * @memberof sandstone/DatePicker
  * @param {Date} date `Date` to convert
- * @returns {String?} Converted date or `null` if `date` is invalid
+ * @returns {String|null} Converted date or `null` if `date` is invalid
  */
 const dateToLocaleString = (date) => {
 	if (!date) {
diff --git a/TimePicker/TimePicker.js b/TimePicker/TimePicker.js
index d81ce248dc..dcfdb83f9d 100644
--- a/TimePicker/TimePicker.js
+++ b/TimePicker/TimePicker.js
@@ -247,7 +247,7 @@ const TimePicker = Pure(
  * @function
  * @memberof sandstone/TimePicker
  * @param {Date} time `Date` to convert
- * @returns {String?} Converted date or `null` if `date` is invalid
+ * @returns {String|null} Converted date or `null` if `date` is invalid
  */
 const timeToLocaleString = (time) => {
 	if (!time) {
diff --git a/TooltipDecorator/util.js b/TooltipDecorator/util.js
index cb55899357..42e02e3fb8 100644
--- a/TooltipDecorator/util.js
+++ b/TooltipDecorator/util.js
@@ -156,13 +156,8 @@ const calcOverflow = function (tooltipNode, clientNode, tooltipDirection, edgeKe
  *
  * @method
  * @memberof sandstone/TooltipDecorator
- * @param   {Object} tooltipNode        The `getBoundingClientRect` values for tooltip node
  * @param   {Object} clientNode         The `getBoundingClientRect` values for client node
- * @param   {String} arrowAnchor        Anchor position from `adjustAnchor`
  * @param   {String} tooltipDirection   Direction of tooltip
- * @param   {Number} tooltipHeight      Tooltip height
- * @param   {Object} overflow           Tooltip's calculated overflow from `calcOverflow`
- * @param   {Boolean} rtl               RTL mode
  * @returns {Object}                    Tooltip top and left position
  * @private
  */
diff --git a/internal/validators/validators.js b/internal/validators/validators.js
index 9fb40b60e1..e29a2b12f1 100644
--- a/internal/validators/validators.js
+++ b/internal/validators/validators.js
@@ -10,8 +10,6 @@
  *
  * @function
  * @param {String} msg				Event name
- * @param	{Function}	fn					Event handler
- * @param	{Node}		[target=`document`]	Event listener target
  *
  * @returns {undefined}
  * @memberof sandstone/internal/validators