diff -u b/multifield.field.inc b/multifield.field.inc
--- b/multifield.field.inc
+++ b/multifield.field.inc
@@ -403,7 +403,7 @@
     $field = field_info_field($field_name);
     if (multifield_extract_multifield_machine_name($field) && $field['cardinality'] == FIELD_CARDINALITY_UNLIMITED && !empty($field['settings']['hide_blank_items']) && field_access('edit', $field, $entity_type) ) {
       $element_langcode = $form[$field_name]['#language'];
-      if (isset($form[$field_name][$element_langcode]['#max_delta']) && $form[$field_name][$element_langcode]['#max_delta'] > 0) {
+      if ((!empty($form[$field_name][$element_langcode]['#max_delta']))&&($form[$field_name][$element_langcode]['#max_delta'] > 0)) {
         $form[$field_name][$element_langcode]['#max_delta']--;
       }
     }