diff --git a/mappers/field.inc b/mappers/field.inc
index 94adae3..615b9a5 100644
--- a/mappers/field.inc
+++ b/mappers/field.inc
@@ -20,6 +20,11 @@ function field_feeds_presave(FeedsSource $source, $entity, $item, $entity_id) {
 
   foreach (field_info_instances($entity_type, $bundle) as $instance) {
     $field_name = $instance['field_name'];
+
+    if (empty($entity->$field_name)) {
+      continue;
+    }
+
     $info = field_info_field($field_name);
 
     foreach ($entity->$field_name as $language => $values) {