diff --git a/modules/field/modules/options/options.module b/modules/field/modules/options/options.module
index d4c6c8f9ebd57eea4f067919df6b5d5e3e37f2ed..38a49b038ebb37e0e0a81357d1b756b32727d967 100644
--- a/modules/field/modules/options/options.module
+++ b/modules/field/modules/options/options.module
@@ -155,6 +155,8 @@ function _options_properties($type, $multiple, $required) {
     'optgroups' => FALSE,
   );
 
+  $properties = array();
+
   switch ($type) {
     case 'select':
       $properties = array(