diff --git a/ui/ui.data.inc b/ui/ui.data.inc
index fdefc65..b3c2627 100755
--- a/ui/ui.data.inc
+++ b/ui/ui.data.inc
@@ -87,7 +87,7 @@ class RulesDataUI {
     $form['types_help']['#text'] = format_plural(count($type_labels), 'Select data of the type %types.', 'Select data of the types %types.', array('%types' => implode(', ', $type_labels)));
 
     if (!empty($info['translatable'])) {
-      if ($info['custom translation language']) {
+      if (!empty($info['custom translation language'])) {
         $text = t('If a multilingual data source (i.e. a translatable field) is given, the argument is translated to the configured language.');
       }
       else {