diff --git a/config/locales/shared.en.yml b/config/locales/shared.en.yml
index 7bcf9042e..6eec539f7 100644
--- a/config/locales/shared.en.yml
+++ b/config/locales/shared.en.yml
@@ -20,12 +20,12 @@ en:
           ine_notice: Student National Number. It is usually composed of alphanumeric characters.
       header:
         expires_at:
-          brouillon: "Expires at %{date} (%{duree_conservation_totale} months after the creation of this file)"
-          en_construction: "Expires at %{date} (%{duree_conservation_totale} months after the last la edition of this file)"
+          brouillon: "Expires on %{date} (%{duree_conservation_totale} months after this file was created)"
+          en_construction: "Expires on %{date} (%{duree_conservation_totale} months after this file was last modified)"
           en_instruction: "This file is being instructed, the administration will answer as soon as possible"
-          accepte: "Expires at %{date} (%{duree_conservation_totale} months after the acceptation of this file)"
-          refuse: "Expires at %{date} (%{duree_conservation_totale} months after the rejection of this file)"
-          sans_suite: "Expires at %{date} (%{duree_conservation_totale} months after this file had been closed)"
+          accepte: "Expires on %{date} (%{duree_conservation_totale} months after this file was accepted)"
+          refuse: "Expires on %{date} (%{duree_conservation_totale} months after this file was rejected)"
+          sans_suite: "Expires on %{date} (%{duree_conservation_totale} months after this file was closed)"
     champs:
       cnaf:
         show:
diff --git a/config/locales/shared.fr.yml b/config/locales/shared.fr.yml
index 4ed54890f..1d4906025 100644
--- a/config/locales/shared.fr.yml
+++ b/config/locales/shared.fr.yml
@@ -21,11 +21,11 @@ fr:
       header:
         expires_at:
           brouillon: "Expirera le %{date} (%{duree_conservation_totale} mois après la création du dossier)"
-          en_construction: "Expirera le %{date} (%{duree_conservation_totale} mois après la dernière date d'édition)"
+          en_construction: "Expirera le %{date} (%{duree_conservation_totale} mois après la dernière modification du dossier)"
           en_instruction: "Ce dossier est en instruction, il n'expirera pas"
           accepte: "Expirera le %{date}  (%{duree_conservation_totale} mois après l'acceptation du dossier)"
           refuse: "Expirera le %{date}  (%{duree_conservation_totale} mois après le refus du dossier)"
-          sans_suite: "Expirera le %{date} (%{duree_conservation_totale} mois après que le dossier aie été classé sans suite)"
+          sans_suite: "Expirera le %{date} (%{duree_conservation_totale} mois après le classement sans suite du dossier)"
 
 
     champs: