diff --git a/app/lib/api_entreprise/entreprise_adapter.rb b/app/lib/api_entreprise/entreprise_adapter.rb
index 3758e065b..377b7afb2 100644
--- a/app/lib/api_entreprise/entreprise_adapter.rb
+++ b/app/lib/api_entreprise/entreprise_adapter.rb
@@ -2,7 +2,8 @@ class ApiEntreprise::EntrepriseAdapter < ApiEntreprise::Adapter
   private
 
   def get_resource
-    ApiEntreprise::API.entreprise(@siret_or_siren, @procedure_id)
+    siren = @siret_or_siren[0..8]
+    ApiEntreprise::API.entreprise(siren, @procedure_id)
   end
 
   def process_params
diff --git a/app/services/siret_service.rb b/app/services/siret_service.rb
index 869039ea5..1aa089e01 100644
--- a/app/services/siret_service.rb
+++ b/app/services/siret_service.rb
@@ -3,7 +3,7 @@ class SIRETService
     procedure_id = dossier&.procedure_id
 
     etablissement_params = ApiEntreprise::EtablissementAdapter.new(siret, procedure_id).to_params
-    entreprise_params = ApiEntreprise::EntrepriseAdapter.new(siren(siret), procedure_id).to_params
+    entreprise_params = ApiEntreprise::EntrepriseAdapter.new(siret, procedure_id).to_params
 
     if etablissement_params.present? && entreprise_params.present?
       association_params = ApiEntreprise::RNAAdapter.new(siret, procedure_id).to_params
@@ -23,10 +23,6 @@ class SIRETService
     end
   end
 
-  def self.siren(siret)
-    siret[0..8]
-  end
-
   def self.handle_legacy_models!(params, entreprise_params, dossier, association_params)
     params[:entreprise_attributes] = entreprise_params.merge(
       {