diff --git a/app/models/entreprise.rb b/app/models/entreprise.rb
index db62b88ec..57057b52d 100644
--- a/app/models/entreprise.rb
+++ b/app/models/entreprise.rb
@@ -6,7 +6,7 @@ class Entreprise < ApplicationRecord
   validates :siren, presence: true
   validates :dossier_id, uniqueness: true
 
-  accepts_nested_attributes_for :rna_information
+  accepts_nested_attributes_for :rna_information, update_only: true
 
   before_save :default_values
 
diff --git a/app/models/etablissement.rb b/app/models/etablissement.rb
index ff2885c46..2b718f035 100644
--- a/app/models/etablissement.rb
+++ b/app/models/etablissement.rb
@@ -5,7 +5,7 @@ class Etablissement < ApplicationRecord
   has_many :exercices, dependent: :destroy
 
   accepts_nested_attributes_for :exercices
-  accepts_nested_attributes_for :entreprise
+  accepts_nested_attributes_for :entreprise, update_only: true
 
   validates :dossier_id, uniqueness: true