diff --git a/spec/factories/champ.rb b/spec/factories/champ.rb
index 2c8796138..943fc5355 100644
--- a/spec/factories/champ.rb
+++ b/spec/factories/champ.rb
@@ -170,15 +170,20 @@ FactoryBot.define do
 
     factory :champ_do_not_use_rna, class: 'Champs::RNAChamp' do
       value { 'W173847273' }
+      value_json { AddressProxy::ADDRESS_PARTS.index_by(&:itself) }
     end
 
     factory :champ_do_not_use_engagement_juridique, class: 'Champs::EngagementJuridiqueChamp' do
+      value { 'EJ' }
     end
 
     factory :champ_do_not_use_cojo, class: 'Champs::COJOChamp' do
     end
 
     factory :champ_do_not_use_rnf, class: 'Champs::RNFChamp' do
+      value { '075-FDD-00003-01' }
+      external_id { '075-FDD-00003-01' }
+      value_json { AddressProxy::ADDRESS_PARTS.index_by(&:itself) }
     end
 
     factory :champ_do_not_use_expression_reguliere, class: 'Champs::ExpressionReguliereChamp' do
diff --git a/spec/tasks/maintenance/populate_rna_json_value_task_spec.rb b/spec/tasks/maintenance/populate_rna_json_value_task_spec.rb
index bdb3fd559..df727227c 100644
--- a/spec/tasks/maintenance/populate_rna_json_value_task_spec.rb
+++ b/spec/tasks/maintenance/populate_rna_json_value_task_spec.rb
@@ -20,7 +20,7 @@ module Maintenance
       end
       it 'updates value_json' do
         expect { subject }.to change { element.reload.value_json }
-          .from(nil)
+          .from(anything)
           .to({
             "street_number" => "33",
             "street_name" => "de Modagor",
diff --git a/spec/tasks/maintenance/populate_rnf_json_value_task_spec.rb b/spec/tasks/maintenance/populate_rnf_json_value_task_spec.rb
index a71eb25ad..f74ed99a1 100644
--- a/spec/tasks/maintenance/populate_rnf_json_value_task_spec.rb
+++ b/spec/tasks/maintenance/populate_rnf_json_value_task_spec.rb
@@ -53,7 +53,7 @@ module Maintenance
 
         it 'updates value_json' do
           expect { subject }.to change { element.reload.value_json }
-            .from(nil)
+            .from(anything)
             .to({
               "street_number" => "16",
               "street_name" => "Rue du Général de Boissieu",
@@ -79,7 +79,7 @@ module Maintenance
 
         it 'updates value_json' do
           expect { subject }.to change { element.reload.value_json }
-            .from(nil)
+            .from(anything)
             .to({
               "street_number" => "16",
               "street_name" => "Rue du Général de Boissieu",