diff --git a/src/select-menu/src/SelectedPropType.js b/src/select-menu/src/SelectedPropType.js
index d1f1aa953..c88efd9ae 100644
--- a/src/select-menu/src/SelectedPropType.js
+++ b/src/select-menu/src/SelectedPropType.js
@@ -2,9 +2,10 @@ import PropTypes from 'prop-types'
 
 /**
  * Selected can either be a string (single values)
+ * or can be a number ( single value)
  * or an array of string (multiple values)
  * NOTE: multiple values are not supported atm
  */
-const SelectedPropType = PropTypes.oneOfType([PropTypes.string, PropTypes.arrayOf(PropTypes.string)])
+const SelectedPropType = PropTypes.oneOfType([PropTypes.string, PropTypes.arrayOf(PropTypes.string), PropTypes.number])
 
 export default SelectedPropType