diff --git a/js/rutherfordatom/view/AtomPropertiesPanel.js b/js/rutherfordatom/view/AtomPropertiesPanel.js
index 864d745..f82a358 100644
--- a/js/rutherfordatom/view/AtomPropertiesPanel.js
+++ b/js/rutherfordatom/view/AtomPropertiesPanel.js
@@ -232,7 +232,6 @@ define( function( require ) {
 
       // a11y
       keyboardStep: 5,
-      shiftKeyboardStep: 1,
       pageKeyboardStep: 10
     };