diff --git a/js/AquaRadioButton.js b/js/AquaRadioButton.js
index 7cb56f35..40196195 100644
--- a/js/AquaRadioButton.js
+++ b/js/AquaRadioButton.js
@@ -47,7 +47,6 @@ define( function( require ) {
       inputType: 'radio',
       containerTagName: 'li',
       labelTagName: 'label',
-      prependLabels: true,
       a11yNameAttribute: 'aquaRadioButton'
     }, options );
 
diff --git a/js/accessibility/AccessibleNumberTweaker.js b/js/accessibility/AccessibleNumberTweaker.js
index 61a21972..70244b94 100644
--- a/js/accessibility/AccessibleNumberTweaker.js
+++ b/js/accessibility/AccessibleNumberTweaker.js
@@ -72,10 +72,10 @@ define( function( require ) {
             timerDelay: 400, // start to fire continuously after pressing for this long (milliseconds)
             timerInterval: 100, // fire continuously at this frequency (milliseconds),
 
+            // a11y
             tagName: 'button',
             containerTagName: 'div',
             ariaRole: 'spinbutton',
-            prependLabels: true,
             focusable: true,
             labelTagName: 'p',
             a11yValuePattern: '{{value}}', // {string} if you want units or additional content, add to pattern