1 files changed, 0 insertions, 1 deletions
diff --git a/lib/gitlab/import_export/project/sample/date_calculator.rb b/lib/gitlab/import_export/project/sample/date_calculator.rb
index 2d989d21166..543fd25d883 100644
--- a/lib/gitlab/import_export/project/sample/date_calculator.rb
+++ b/lib/gitlab/import_export/project/sample/date_calculator.rb
@@ -9,7 +9,6 @@ module Gitlab
 
           def initialize(dates)
             @dates = dates.dup
-            @dates.flatten!
             @dates.compact!
             @dates.sort!
             @dates.map! { |date| date.to_time.to_f }