diff --git a/js/common/view/SliderKnob.js b/js/common/view/SliderKnob.js
index cefb5b6e..2b8d7820 100644
--- a/js/common/view/SliderKnob.js
+++ b/js/common/view/SliderKnob.js
@@ -49,9 +49,9 @@ function SliderKnob( tandem, options ) {
   this.addChild( rectangle );
 
   // @private - link the fill to the enabled property. Slider knob exists for lifetime of sim, no dispose necessary.
-  this.enabledPropertyListener = function( enabled ) {
+  this.enabledProperty.link( enabled => {
     rectangle.fill = enabled ? enabledGradient : disabledGradient;
-  };
+  } );
 
   //add a grid of grip dots
   const dx = width / 5;
@@ -72,16 +72,6 @@ forcesAndMotionBasics.register( 'SliderKnob', SliderKnob );
 
 inherit( Node, SliderKnob, {
 
-  /**
-   * This type implemented enabled differently from the default, so support that here.
-   * @protected
-   * @override
-   * @param {boolean} enabled
-   */
-  onEnabledPropertyChange: function( enabled ) {
-    this.enabledPropertyListener( enabled );
-  },
-
   /**
    * @private
    * @param {number} x