diff --git a/app/jobs/pjs_migration_job.rb b/app/jobs/pjs_migration_job.rb
index 4a44b59e4..06acaafd6 100644
--- a/app/jobs/pjs_migration_job.rb
+++ b/app/jobs/pjs_migration_job.rb
@@ -1,3 +1,5 @@
+require 'fog/openstack'
+
 class PjsMigrationJob < ApplicationJob
   queue_as :pj_migration_jobs
 
@@ -7,7 +9,6 @@ class PjsMigrationJob < ApplicationJob
     return if already_moved?(blob)
 
     service = blob.service
-    client = service.client
     container = service.container
     old_key = blob.key
     new_key = "#{blob.created_at.strftime('%Y/%m/%d')}/#{old_key[0..1]}/#{old_key}"
@@ -28,4 +29,14 @@ class PjsMigrationJob < ApplicationJob
   def already_moved?(blob)
     blob.key.include?('/')
   end
+
+  private
+
+  def client
+    @client ||= begin
+      credentials = Rails.application.config.active_storage
+        .service_configurations['openstack']['credentials']
+      Fog::OpenStack::Storage.new(credentials)
+    end
+  end
 end
diff --git a/app/lib/active_storage/downloadable_file.rb b/app/lib/active_storage/downloadable_file.rb
index c403495f1..d2902ebd8 100644
--- a/app/lib/active_storage/downloadable_file.rb
+++ b/app/lib/active_storage/downloadable_file.rb
@@ -1,3 +1,5 @@
+require 'fog/openstack'
+
 class ActiveStorage::DownloadableFile
   def self.create_list_from_dossiers(
     dossiers,
@@ -20,7 +22,6 @@ class ActiveStorage::DownloadableFile
         true
       else
         service = file.blob.service
-        client = service.client
         begin
           client.head_object(service.container, file.blob.key)
           true
@@ -33,6 +34,13 @@ class ActiveStorage::DownloadableFile
 
   private
 
+  def self.client
+    credentials = Rails.application.config.active_storage
+      .service_configurations['openstack']['credentials']
+
+    Fog::OpenStack::Storage.new(credentials)
+  end
+
   def self.bill_and_path(bill)
     [
       bill,
diff --git a/spec/lib/active_storage/downloadable_file_spec.rb b/spec/lib/active_storage/downloadable_file_spec.rb
index 81bad0a86..7119ff164 100644
--- a/spec/lib/active_storage/downloadable_file_spec.rb
+++ b/spec/lib/active_storage/downloadable_file_spec.rb
@@ -35,11 +35,13 @@ describe ActiveStorage::DownloadableFile do
       let(:available_blob_key) { 'available' }
       let(:unavailable_blob_key) { 'broken' }
       let(:active_storage_client) { double }
-      let(:active_storage_service) { double(client: active_storage_client, container: object_storage_container) }
+      let(:active_storage_service) { double(container: object_storage_container) }
 
       before do
         require 'fog/openstack'
         Rails.application.config.active_storage.service = :openstack
+
+        allow(ActiveStorage::DownloadableFile).to receive(:client).and_return(active_storage_client)
       end
       after { Rails.application.config.active_storage.service = :test }