diff --git a/js/accessibility/describers/Alerter.js b/js/accessibility/describers/Alerter.js
index 409a13e02..81fc0572d 100644
--- a/js/accessibility/describers/Alerter.js
+++ b/js/accessibility/describers/Alerter.js
@@ -39,7 +39,7 @@ class Alerter {
   /**
    * Alert to both description and voicing utteranceQueues, depending on if both are supported by this instance
    * @public
-   * @param {AlertableDef} alertable
+   * @param {TAlertableDef} alertable
    */
   alert( alertable ) {
     this.alertToVoicing && voicingUtteranceQueue.addToBack( alertable );
@@ -48,7 +48,7 @@ class Alerter {
 
   /**
    * Forward to provided Node for UtteranceQueue alerting logic. See ParallelDOM.alertDescriptionUtterance() for details.
-   * @param {AlertableDef} alertable
+   * @param {TAlertableDef} alertable
    * @public
    */
   alertDescriptionUtterance( alertable ) {
diff --git a/js/accessibility/describers/BorderAlertsDescriber.js b/js/accessibility/describers/BorderAlertsDescriber.js
index 43312531e..7a0769ea1 100644
--- a/js/accessibility/describers/BorderAlertsDescriber.js
+++ b/js/accessibility/describers/BorderAlertsDescriber.js
@@ -39,7 +39,7 @@ class BorderAlertsDescriber {
       // {Property<Bounds2>} - The bounds that makes the border we alert when against
       boundsProperty: new Property( new Bounds2( Number.NEGATIVE_INFINITY, Number.NEGATIVE_INFINITY, Number.POSITIVE_INFINITY, Number.POSITIVE_INFINITY ) ),
 
-      // {null|AlertableDef} At left edge, right edge, top, and bottom with values to alert if you reach that bound.
+      // {null|TAlertableDef} At left edge, right edge, top, and bottom with values to alert if you reach that bound.
       // Pass in null if you don't want that border alerted. By default, if these are non-Utterances, they will be wrapped
       // in utterances, and for voicing classified as "object responses", if passing in a custom utterance, it is up to
       // the client to divide into voicing response categories.
@@ -71,7 +71,7 @@ class BorderAlertsDescriber {
   /**
    * Wrap the direction property in an Utterance if not already one. Null is supported.
    * @private
-   * @param {AlertableDef|null} alert
+   * @param {TAlertableDef|null} alert
    * @param {DirectionEnum} direction
    * @param {Object} [utteranceOptions] - if creating an Utterance, options to pass to it
    */
@@ -101,7 +101,7 @@ class BorderAlertsDescriber {
    *
    * @param {Vector2} position
    * @param {string} [key] - prefer this direction key if provided
-   * @returns{null|AlertableDef} - null if there is nothing to alert
+   * @returns{null|TAlertableDef} - null if there is nothing to alert
    */
   getAlertAtBorder( position, key ) {
     let alertDirection;
@@ -160,7 +160,7 @@ class BorderAlertsDescriber {
    * @public
    * @param {Vector2} position
    * @param {KeyboardEvent} [domEvent] - we don't get this from a mouse drag listener
-   * @returns{null|AlertableDef} - null if there is nothing to alert
+   * @returns{null|TAlertableDef} - null if there is nothing to alert
    */
   getAlertOnEndDrag( position, domEvent ) {
     let key;
diff --git a/js/accessibility/describers/MovementAlerter.js b/js/accessibility/describers/MovementAlerter.js
index aa0b1f268..e3cb31b99 100644
--- a/js/accessibility/describers/MovementAlerter.js
+++ b/js/accessibility/describers/MovementAlerter.js
@@ -90,7 +90,7 @@ class MovementAlerter extends Alerter {
       // see BorderAlertsDescriber
       borderAlertsOptions: null,
 
-      // {Object.<DIRECTION, AlertableDef> see DirectionEnum for allowed keys. Any missing keys will not be alerted.
+      // {Object.<DIRECTION, TAlertableDef> see DirectionEnum for allowed keys. Any missing keys will not be alerted.
       // Use `{}` to omit movementAlerts.
       movementAlerts: DEFAULT_MOVEMENT_DESCRIPTIONS,
 
@@ -147,7 +147,7 @@ class MovementAlerter extends Alerter {
    * @public
    * @override
    *
-   * @param {AlertableDef} alertable - anything that can be passed to UtteranceQueue
+   * @param {TAlertableDef} alertable - anything that can be passed to UtteranceQueue
    */
   alert( alertable ) {
     super.alert( alertable );