diff --git a/app/views/dossiers/_infos_dossier.html.haml b/app/views/dossiers/_infos_dossier.html.haml
index d763365b7..2a18e98fa 100644
--- a/app/views/dossiers/_infos_dossier.html.haml
+++ b/app/views/dossiers/_infos_dossier.html.haml
@@ -93,22 +93,22 @@
     -if gestionnaire_signed_in?
       -if !@facade.dossier.read_only?
         = form_tag(url_for({controller: 'backoffice/dossiers', action: :valid, dossier_id: @facade.dossier.id}), class: 'form-inline', method: 'POST') do
-          %button#action_button.btn.btn-success
-            = 'Valider le dossier'
+          %button.action_button.btn.btn-success{'data-toggle' => :tooltip, title: 'En cliquant ici, vous figez le dossier et autorisez le dépôt du dossier pour instruction.'}
+            = 'Déclarer complet'
 
       -elsif @facade.dossier.submitted?
         = form_tag(url_for({controller: 'backoffice/dossiers', action: :receive, dossier_id: @facade.dossier.id}), class: 'form-inline', method: 'POST') do
-          %button#action_button.btn.btn-success
+          %button.action_button.btn.btn-success
             = 'Notifier de la bonne réception'
 
       -elsif @facade.dossier.received?
         = form_tag(url_for({controller: 'backoffice/dossiers', action: :close, dossier_id: @facade.dossier.id}), class: 'form-inline action_button', method: 'POST', style: 'display:inline', 'data-toggle' => :tooltip, title: 'Accepter') do
-          %button#action_button.btn.btn-success
+          %button.action_button.btn.btn-success
             %i.fa.fa-check
         = form_tag(url_for({controller: 'backoffice/dossiers', action: :refuse, dossier_id: @facade.dossier.id}), class: 'form-inline action_button', method: 'POST', style: 'display:inline', 'data-toggle' => :tooltip, title: 'Refuser') do
-          %button#action_button.btn.btn-danger
+          %button.action_button.btn.btn-danger
             %i.fa.fa-times
         = form_tag(url_for({controller: 'backoffice/dossiers', action: :without_continuation, dossier_id: @facade.dossier.id}), class: 'form-inline action_button', method: 'POST', style: 'display:inline', 'data-toggle' => :tooltip, title: 'Classer sans suite') do
-          %button#action_button.btn.btn-warning
+          %button.action_button.btn.btn-warning
             %i.fa.fa-circle-o
 
diff --git a/spec/mailers/notification_mailer_spec.rb b/spec/mailers/notification_mailer_spec.rb
index ff411562d..34a373b35 100644
--- a/spec/mailers/notification_mailer_spec.rb
+++ b/spec/mailers/notification_mailer_spec.rb
@@ -18,7 +18,7 @@ RSpec.describe NotificationMailer, type: :mailer do
 
     subject(:subject) { described_class.dossier_validated(dossier) }
 
-    it { expect(subject.body).to match("Votre dossier N°#{dossier.id} a été validé par votre accompagnateur.") }
+    it { expect(subject.body).to match("Votre dossier N°#{dossier.id} est prêt à être déposé pour instruction.") }
     it { expect(subject.body).to include("Afin de finaliser son dépôt, merci de vous rendre sur #{users_dossier_recapitulatif_url(dossier_id: dossier.id)}") }
     it { expect(subject.subject).to eq("Votre dossier TPS N°#{dossier.id} a été validé") }
   end
diff --git a/spec/views/backoffice/dossiers/show.html.html_spec.rb b/spec/views/backoffice/dossiers/show.html.html_spec.rb
index 657baeb83..89ef91ff3 100644
--- a/spec/views/backoffice/dossiers/show.html.html_spec.rb
+++ b/spec/views/backoffice/dossiers/show.html.html_spec.rb
@@ -59,9 +59,9 @@ describe 'backoffice/dossiers/show.html.haml', type: :view do
 
       it { expect(rendered).to have_content('Nouveau') }
 
-      it 'button Valider le dossier is present' do
-        expect(rendered).to have_css('#action_button')
-        expect(rendered).to have_content('Valider le dossier')
+      it 'button Déclarer complet is present' do
+        expect(rendered).to have_css('.action_button')
+        expect(rendered).to have_content('Déclarer complet')
       end
     end
 
@@ -74,9 +74,9 @@ describe 'backoffice/dossiers/show.html.haml', type: :view do
 
       it { expect(rendered).to have_content('Répondu') }
 
-      it 'button Valider le dossier is present' do
-        expect(rendered).to have_css('#action_button')
-        expect(rendered).to have_content('Valider le dossier')
+      it 'button Déclarer complet is present' do
+        expect(rendered).to have_css('.action_button')
+        expect(rendered).to have_content('Déclarer complet')
       end
     end
 
@@ -89,9 +89,9 @@ describe 'backoffice/dossiers/show.html.haml', type: :view do
 
       it { expect(rendered).to have_content('Mis à jour') }
 
-      it 'button Valider le dossier is present' do
-        expect(rendered).to have_css('#action_button')
-        expect(rendered).to have_content('Valider le dossier')
+      it 'button Déclarer complet is present' do
+        expect(rendered).to have_css('.action_button')
+        expect(rendered).to have_content('Déclarer complet')
       end
     end
 
@@ -104,9 +104,9 @@ describe 'backoffice/dossiers/show.html.haml', type: :view do
 
       it { expect(rendered).to have_content('Figé') }
 
-      it 'button Valider le dossier  is not present' do
-        expect(rendered).not_to have_css('#action_button')
-        expect(rendered).not_to have_content('Valider le dossier')
+      it 'button Déclarer complet  is not present' do
+        expect(rendered).not_to have_css('.action_button')
+        expect(rendered).not_to have_content('Déclarer complet')
       end
     end
 
@@ -120,11 +120,11 @@ describe 'backoffice/dossiers/show.html.haml', type: :view do
       it { expect(rendered).to have_content('Déposé') }
 
       it 'button notifier de la bonne réception is present' do
-        expect(rendered).to have_css('#action_button')
+        expect(rendered).to have_css('.action_button')
         expect(rendered).to have_content('Notifier de la bonne réception')
       end
 
-      it 'button Valider le dossier is not present' do
+      it 'button Déclarer complet is not present' do
         expect(rendered).not_to have_content('Accepter le dossier')
       end
     end
@@ -170,7 +170,7 @@ describe 'backoffice/dossiers/show.html.haml', type: :view do
 
       it { expect(rendered).to have_content('Sans suite') }
 
-      it 'button Valider le dossier is not present' do
+      it 'button Déclarer complet is not present' do
         expect(rendered).not_to have_css('.action_button[data-toggle="tooltip"][title="Accepter"]')
         expect(rendered).not_to have_css('.action_button[data-toggle="tooltip"][title="Classer sans suite"]')
         expect(rendered).not_to have_css('.action_button[data-toggle="tooltip"][title="Refuser"]')
@@ -186,7 +186,7 @@ describe 'backoffice/dossiers/show.html.haml', type: :view do
 
       it { expect(rendered).to have_content('Refusé') }
 
-      it 'button Valider le dossier is not present' do
+      it 'button Déclarer complet is not present' do
         expect(rendered).not_to have_css('.action_button[data-toggle="tooltip"][title="Accepter"]')
         expect(rendered).not_to have_css('.action_button[data-toggle="tooltip"][title="Classer sans suite"]')
         expect(rendered).not_to have_css('.action_button[data-toggle="tooltip"][title="Refuser"]')