diff --git a/app/views/layouts/_pre_maintenance.html.haml b/app/views/layouts/_pre_maintenance.html.haml
index 669ba8fe5..06ed29093 100644
--- a/app/views/layouts/_pre_maintenance.html.haml
+++ b/app/views/layouts/_pre_maintenance.html.haml
@@ -1,9 +1,4 @@
-- if feature_enabled?(:pre_maintenance_mode)
+- if ENV['BANNER_MESSAGE'].present?
   .site-banner.warning
     .container
-      .site-banner-icon 🕚
-      .site-banner-text
-        %strong
-          Une opération de maintenance est prévue sur #{APPLICATION_NAME} à 23 h 00.
-        %br
-        La plateforme sera inaccessible pendant une vingtaine de minutes.
+      = sanitize(ENV['BANNER_MESSAGE'])
diff --git a/config/initializers/flipper.rb b/config/initializers/flipper.rb
index 22886ee3a..d91b227e9 100644
--- a/config/initializers/flipper.rb
+++ b/config/initializers/flipper.rb
@@ -34,7 +34,6 @@ features = [
   :maintenance_mode,
   :mini_profiler,
   :operation_log_serialize_subject,
-  :pre_maintenance_mode,
   :xray,
   :carte_ign,
   :localization