--- a/toolkit/toolkit/about/aboutAddons.ftl
+++ b/toolkit/toolkit/about/aboutAddons.ftl
@@ -338,16 +338,20 @@ addon-options-button =
 
 report-addon-button = Signaler
 remove-addon-button = Supprimer
 # The link will always be shown after the other text.
 remove-addon-disabled-button = Suppression impossible <a data-l10n-name="link">Pourquoi ?</a>
 disable-addon-button = Désactiver
 enable-addon-button = Activer
 expand-addon-button = Plus d’options
+disable-addon-button-label =
+    .aria-label = Désactiver
+enable-addon-button-label =
+    .aria-label = Activer
 preferences-addon-button =
     { PLATFORM() ->
         [windows] Options
        *[other] Préférences
     }
 details-addon-button = Détails
 release-notes-addon-button = Notes de version
 permissions-addon-button = Permissions