diff --git a/js/gravity-force-lab/view/MassNode.js b/js/gravity-force-lab/view/MassNode.js
index 974416b6..9983a33c 100644
--- a/js/gravity-force-lab/view/MassNode.js
+++ b/js/gravity-force-lab/view/MassNode.js
@@ -80,8 +80,8 @@ define( function( require ) {
      */
     resetAriaValueText: function() {
       const positionDescriber = GravityForceLabPositionDescriber.getDescriber();
-      if ( positionDescriber.objectAtEdge( this.enum ) ) {
-        this.ariaValueText = positionDescriber.getEdgeValueText( this.enum );
+      if ( positionDescriber.objectTouchingBoundary( this.enum ) ) {
+        this.ariaValueText = positionDescriber.getBoundaryTouchingValueText( this.enum );
       }
       else {
         this.ariaValueText = positionDescriber.getPositionAndDistanceFromOtherObjectText( this.enum );