diff --git a/app/views/contests/settings_offline_edit.html.slim b/app/views/contests/settings_offline_edit.html.slim
index be8a866..c0f6ceb 100644
--- a/app/views/contests/settings_offline_edit.html.slim
+++ b/app/views/contests/settings_offline_edit.html.slim
@@ -1,20 +1,27 @@
 = render "settings_nav"
 
-= form_with model: @contest, url: "/contests/#{@contest.id}/settings/offline" do |form|
-  .row.mt-2.mb-3
+- if @contest.puzzles.length > 1
+  .row
     .col
-      - if @contest.puzzles.length <= 1
-        .form-check.form-switch
-          = form.check_box :offline_form, class: "form-check-input"
-          = form.label :offline_form
-          .form-text = t("activerecord.attributes.contest.offline_form_warning")
-          .form-text = t("activerecord.attributes.contest.offline_form_description")
-      - else
-        .form-check.form-switch
-          = form.check_box :offline_form_fake, class: "form-check-input", disabled: true
-          = form.label :offline_form
-          .form-text = t("activerecord.attributes.contest.offline_form_warning")
-          .form-text = t("activerecord.attributes.contest.offline_form_description")
-  .row.mt-4
-    .col
-      = form.submit t("helpers.buttons.update"), class: "btn btn-primary"
\ No newline at end of file
+      .alert.alert-warning
+        = t("contests.form.offline_single_puzzle_warning")
+
+- if @contest.puzzles.length <= 1
+  = form_with model: @contest, url: "/contests/#{@contest.id}/settings/offline" do |form|
+    .row.mt-2.mb-3
+      .col
+        - if @contest.puzzles.length <= 1
+          .form-check.form-switch
+            = form.check_box :offline_form, class: "form-check-input"
+            = form.label :offline_form
+            .form-text = t("activerecord.attributes.contest.offline_form_warning")
+            .form-text = t("activerecord.attributes.contest.offline_form_description")
+        - else
+          .form-check.form-switch
+            = form.check_box :offline_form_fake, class: "form-check-input", disabled: true
+            = form.label :offline_form
+            .form-text = t("activerecord.attributes.contest.offline_form_warning")
+            .form-text = t("activerecord.attributes.contest.offline_form_description")
+    .row.mt-4
+      .col
+        = form.submit t("helpers.buttons.update"), class: "btn btn-primary"
\ No newline at end of file
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 2e6779b..dba687f 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -177,6 +177,7 @@ en:
       categories: Participant categories
       general: General parameters
       offline: Offline participation
+      offline_single_puzzle_warning: This is not available for contests with more than one puzzle
     index:
       title: Welcome %{username}!
       manage_contests: Manage my contests
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 85b72ad..cd5ffea 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -148,6 +148,7 @@ fr:
       categories: Catégories de participant.e.s
       general: Paramètres généraux
       offline: Participation hors-ligne
+      offline_single_puzzle_warning: Ce n'est pas activable pour les concours avec plusieurs puzzles
     index:
       title: Bienvenue %{username} !
       manage_contests: Mes concours de puzzle