diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index e1a67e0fb..e0cc03d12 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -189,7 +189,7 @@ class Procedure < ApplicationRecord
   def generate_export
     exportable_dossiers = dossiers.downloadable_sorted
 
-    headers = exportable_dossiers.any? ? exportable_dossiers.first.export_headers : []
+    headers = exportable_dossiers&.first&.export_headers || []
     data = exportable_dossiers.any? ? exportable_dossiers.map { |d| d.full_data_strings_array } : [[]]
 
     {