diff --git a/Civi/Mailinglistsync/ADGroupMailingList.php b/Civi/Mailinglistsync/ADGroupMailingList.php
index 5cbd063..e1eaf30 100644
--- a/Civi/Mailinglistsync/ADGroupMailingList.php
+++ b/Civi/Mailinglistsync/ADGroupMailingList.php
@@ -387,8 +387,7 @@ class ADGroupMailingList extends GroupMailingList {
       if ($contactSearch === NULL) {
         $result += [
           'is_error' => 1,
-          'error_message' => 'No contact found for SID %1',
-          [1 => $contact['sid']],
+          'error_message' => "No contact found for SID '{$contact['sid']}'",
         ];
       }
 
@@ -443,7 +442,7 @@ class ADGroupMailingList extends GroupMailingList {
       }
     }
     $results['count'] = count($results['updated'] ?? []);
-    $results['error_count'] = array_sum(array_column($results['updated'] ?? [], 'error_count'));
+    $results['error_count'] = array_sum(array_column($results['updated'] ?? [], 'is_error'));
     return ($results['count'] || $results['error_count']) ? $results : [];
   }