diff --git a/lib/Subscribers/ImportExport/Import/Import.php b/lib/Subscribers/ImportExport/Import/Import.php
index 8eb983e703..99adb767b3 100644
--- a/lib/Subscribers/ImportExport/Import/Import.php
+++ b/lib/Subscribers/ImportExport/Import/Import.php
@@ -93,7 +93,7 @@ class Import {
       'fields' => $this->subscribers_fields
     );
     list($existing_subscribers['data'], $new_subscribers['data'], $wp_users) =
-      $this->splitSubscribersData($subscribers_data, $this->subscribers_fields);
+      $this->splitSubscribersData($subscribers_data);
     $subscribers_data = null;
 
     // create or update subscribers
@@ -219,9 +219,7 @@ class Import {
     }
     $new_subscribers = $subscribers_data;
     // reindex array after unsetting elements
-    array_walk($new_subscribers, function(&$values) {
-      sort($values);
-    });
+    $new_subscribers = array_map('array_values', $new_subscribers);
     // remove empty values
     $new_subscribers = array_filter($new_subscribers);
     return array(
diff --git a/tests/unit/Subscribers/ImportExport/Import/ImportTest.php b/tests/unit/Subscribers/ImportExport/Import/ImportTest.php
index 2cedf2325a..1594b8ce47 100644
--- a/tests/unit/Subscribers/ImportExport/Import/ImportTest.php
+++ b/tests/unit/Subscribers/ImportExport/Import/ImportTest.php
@@ -114,7 +114,7 @@ class ImportTest extends MailPoetTest {
       ));
     $subscriber->save();
     list($existing_subscribers, $new_subscribers, $wp_users, ) = $this->import->splitSubscribersData(
-      $this->subscribers_data, $this->subscribers_fields
+      $this->subscribers_data
     );
     expect($existing_subscribers['email'][0])->equals($this->subscribers_data['email'][0]);
     expect($new_subscribers['email'][0])->equals($this->subscribers_data['email'][1]);