diff --git a/app/Api/V1/Controllers/Models/Bill/UpdateController.php b/app/Api/V1/Controllers/Models/Bill/UpdateController.php
index fd18909383..eac287a4dd 100644
--- a/app/Api/V1/Controllers/Models/Bill/UpdateController.php
+++ b/app/Api/V1/Controllers/Models/Bill/UpdateController.php
@@ -72,8 +72,6 @@ final class UpdateController extends Controller
         $admin       = auth()->user();
         $enrichment  = new SubscriptionEnrichment();
         $enrichment->setUser($admin);
-        $enrichment->setStart($this->parameters->get('start'));
-        $enrichment->setEnd($this->parameters->get('end'));
         $bill        = $enrichment->enrichSingle($bill);
 
         /** @var BillTransformer $transformer */
diff --git a/app/Api/V1/Requests/Models/Bill/UpdateRequest.php b/app/Api/V1/Requests/Models/Bill/UpdateRequest.php
index 6f2faab885..08577fb388 100644
--- a/app/Api/V1/Requests/Models/Bill/UpdateRequest.php
+++ b/app/Api/V1/Requests/Models/Bill/UpdateRequest.php
@@ -89,7 +89,7 @@ class UpdateRequest extends FormRequest
             'repeat_freq'    => 'in:weekly,monthly,quarterly,half-year,yearly',
             'skip'           => ['min:0', 'max:31', 'numeric'],
             'active'         => [new IsBoolean()],
-            'notes'          => ['min:1', 'max:32768'],
+            'notes'          => ['nullable', 'min:1', 'max:32768'],
         ];
     }
 
diff --git a/changelog.md b/changelog.md
index 264547d0fc..c4a16e24e3 100644
--- a/changelog.md
+++ b/changelog.md
@@ -12,6 +12,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - [Issue 12928](https://github.com/firefly-iii/firefly-iii/issues/12928) (Webhook creation fails) reported by @Xav-v
 - [Issue 12922](https://github.com/firefly-iii/firefly-iii/issues/12922) (Undefined variable $incomeTopLength in category graphs) reported by @GunoH
 - [Issue 12929](https://github.com/firefly-iii/firefly-iii/issues/12929) (v6.7.6 Alpine.js requires 'unsafe-eval' in CSP – breaks behind strict proxies) reported by @37-b-j
+- #12934
 
 ## v6.7.6 - 2026-09-28