diff --git a/jquery_ui_multiselect.module b/jquery_ui_multiselect.module
index 79a6cbe..9352e8e 100644
--- a/jquery_ui_multiselect.module
+++ b/jquery_ui_multiselect.module
@@ -156,7 +156,7 @@ function jquery_ui_multiselect_field_widget_options_select_form_alter(&$element,
       }
     }
     $element['#options'] = $options + $element['#options'];
-
+    unset($element['#options']['_none']);
     // Prepare settings to pass on to JS.
     $settings = $context['instance']['settings']['jquery_ui_multiselect'];
     // Remove settings that should not be passed on to JS.