diff --git a/app/jobs/regular/export_csv_file.rb b/app/jobs/regular/export_csv_file.rb
index 5a7e4d741a3..c14cdb80b46 100644
--- a/app/jobs/regular/export_csv_file.rb
+++ b/app/jobs/regular/export_csv_file.rb
@@ -134,7 +134,7 @@ module Jobs
           # deleted topic
           topic_data = Topic.with_deleted.find_by(id: user_archive['topic_id'])
         end
-        category = topic_data.category
+        category = topic_data.category if topic_data
         sub_category = "-"
         if category
           category_name = category.name