diff --git a/app/models/etablissement.rb b/app/models/etablissement.rb
index 04274d820..a5b2b62f7 100644
--- a/app/models/etablissement.rb
+++ b/app/models/etablissement.rb
@@ -139,11 +139,8 @@ class Etablissement < ApplicationRecord
   end
 
   def entreprise_bilans_bdf_to_csv
-    headers = ["bilans"].concat(entreprise_bilans_bdf[0].keys)
-    data = entreprise_bilans_bdf.each_with_index.map do |bilan, i|
-      month = I18n.l(Date.current - (i + 1).year, format: "%m/%Y")
-      [month].concat(bilan.values)
-    end
+    headers = entreprise_bilans_bdf[0].keys
+    data = entreprise_bilans_bdf.map(&:values)
     SpreadsheetArchitect.to_csv(headers: headers, data: data)
   end