diff --git a/app/jobs/find_dubious_procedures_job.rb b/app/jobs/find_dubious_procedures_job.rb
index 8f399f672..13c9a91ab 100644
--- a/app/jobs/find_dubious_procedures_job.rb
+++ b/app/jobs/find_dubious_procedures_job.rb
@@ -24,7 +24,7 @@ class FindDubiousProceduresJob < CronJob
       .where(procedures: { closed_at: nil, whitelisted_at: nil })
 
     dubious_procedures_and_tdcs = forbidden_tdcs
-      .group_by(&:procedure_id)
+      .group_by { |type_de_champ| type_de_champ.procedure.id }
       .map { |_procedure_id, tdcs| [tdcs[0].procedure, tdcs] }
 
     AdministrationMailer.dubious_procedures(dubious_procedures_and_tdcs).deliver_later
diff --git a/app/models/type_de_champ.rb b/app/models/type_de_champ.rb
index c308f397a..e0ff6990d 100644
--- a/app/models/type_de_champ.rb
+++ b/app/models/type_de_champ.rb
@@ -18,6 +18,8 @@
 #  stable_id    :bigint
 #
 class TypeDeChamp < ApplicationRecord
+  self.ignored_columns = ['procedure_id']
+
   enum type_champs: {
     text: 'text',
     textarea: 'textarea',