Fix case of missing options, see #116

phetsims · Jan 22, 2017 · ab0dd89 · ab0dd89
1 parent be0de6e
commit ab0dd89
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/js/BooleanProperty.js b/js/BooleanProperty.js
@@ -33,7 +33,7 @@ define( function( require ) {
    * @constructor
    */
   function BooleanProperty( value, options ) {
-    assert && assert( !options.phetioValueType, 'phetioValueType is provided by BooleanProperty' );
+    assert && assert( !options || !options.phetioValueType, 'phetioValueType is provided by BooleanProperty' );
     options = _.extend( {
       phetioValueType: TBoolean
     }, options );