diff --git a/app/Http/Requests/Bo/Invoices/UpdateInvoiceRequest.php b/app/Http/Requests/Bo/Invoices/UpdateInvoiceRequest.php
index 338d9eb..91e9c98 100644
--- a/app/Http/Requests/Bo/Invoices/UpdateInvoiceRequest.php
+++ b/app/Http/Requests/Bo/Invoices/UpdateInvoiceRequest.php
@@ -21,6 +21,7 @@ class UpdateInvoiceRequest extends StoreInvoiceRequest
                 $rules = array_merge($rules, parent::rules());
             }
             $rules = array_merge($rules, [
+                'comment' => 'sometimes|nullable|string|min:15',
                 'sent_client_date' => 'required_with:signed_date,sent_accounting_date|sometimes|nullable|date',
                 'signed_date' => 'required_with:sent_accounting_date|sometimes|nullable|date',
                 'sent_accounting_date' => 'sometimes|nullable|date',
diff --git a/resources/views/bo/pages/invoices/form-inputs.blade.php b/resources/views/bo/pages/invoices/form-inputs.blade.php
index 0a9f2d6..058b0c7 100644
--- a/resources/views/bo/pages/invoices/form-inputs.blade.php
+++ b/resources/views/bo/pages/invoices/form-inputs.blade.php
@@ -8,7 +8,7 @@
                 @if($invoiceModel->status !== \App\Enums\Invoices\InvoiceStatusEnum::opened)
                 {{ __('Impossible de mettre à jour les informations d\'un devis :status.', ['status' => $invoiceModel->status->label()]) }}
                 @elseif($invoiceModel->signed_date)
-                {{ __('Impossible de mettre à jour les informations d\'un devis déjà signé, seule la section "État" est prise en compte') }}
+                {{ __('Impossible de mettre à jour les informations d\'un devis déjà signé, seule les sections "État" et "Commentaires" sont pris en compte') }}
                 @endif
             </strong>
         </div>
@@ -215,8 +215,6 @@
             <div class="row mb-3">
                 <div class="col-12">
                     @if($invoiceModel->sent_client_date)
-                    <textarea class="form-control" disabled>{{ $invoiceModel->comment }}</textarea>
-                    @else
                     @include('bo.partials.inputs.text-html', [
                         'id' => 'invoiceComment',
                         'label' => __('Commentaire du :model', [
@@ -229,6 +227,8 @@
                             'number' => 15
                         ]),
                     ])
+                    @else
+                    <textarea class="form-control" disabled>{{ $invoiceModel->comment }}</textarea>
                     @endif
                 </div>
             </div>