diff --git a/emfield.cck.inc b/emfield.cck.inc
index 6480ebf..b5cbf6a 100644
--- a/emfield.cck.inc
+++ b/emfield.cck.inc
@@ -160,7 +160,7 @@ function _emfield_emfield_widget_settings($op, $widget, $module) {
     case 'save':
       $columns = array('providers');
       foreach (module_implements('emfield_widget_settings_extra') as $module) {
-        $columns = array_merge($columns, module_invoke($module, 'emfield_widget_settings_extra', 'save', $widget));
+        $columns = array_merge($columns, array(module_invoke($module, 'emfield_widget_settings_extra', 'save', $widget)));
       }
 
       return $columns;