diff --git a/soft_length_limit.module b/soft_length_limit.module
index c0469e8de89715009aa8afea897ac5a8d1d186a1..2ffeb46efb3a4a1f3e51736ace73001db6f921c4 100644
--- a/soft_length_limit.module
+++ b/soft_length_limit.module
@@ -72,7 +72,7 @@ function soft_length_limit_field_attach_form($entity_type, $entity, &$form, &$fo
     }
   }
 
-  if (isset($form['title'])) {
+  if (isset($form['title']) and isset($form['title']['#maxlength'])) {
     $form['title']['#attributes']['class'][] = 'soft-length-limit';
     $form['title']['#attributes']['data-soft-length-limit'] = $form['title']['#maxlength'];
   }