diff --git a/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.html b/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.html
index 5d989d9..3b3e742 100644
--- a/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.html
+++ b/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.html
@@ -7,20 +7,20 @@
         </mat-form-field>
         <mat-form-field class="w80p">
             <mat-label>Gruppe</mat-label>
-            <input matInput [formControl]="name" />
+            <input matInput [formControl]="name" [readonly] = 'group.internal' />
         </mat-form-field>
     </div>
     <!-- comment -->
     <div class="dd-row input-row">
         <mat-form-field>
             <mat-label>Kommentar</mat-label>
-            <textarea matInput [formControl]="comment"></textarea>
+            <textarea matInput [formControl]="comment" [readonly] = 'group.internal'></textarea>
         </mat-form-field>
     </div>
     <mat-divider></mat-divider>
     <!-- active, internal, async -->
     <div class="dd-row input-row">
-        <mat-slide-toggle [(ngModel)]="group.active">
+        <mat-slide-toggle [(ngModel)]="group.active" [disabled]='group.internal'>
             Aktiv
         </mat-slide-toggle>
         <mat-slide-toggle [(ngModel)]="group.internal" disabled>
diff --git a/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.ts b/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.ts
index b997e95..865b583 100644
--- a/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.ts
+++ b/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-update-form/group-update-form.component.ts
@@ -46,6 +46,7 @@ export class GroupUpdateFormComponent {
   errorMessage = signal('');
 
   constructor(private uService: GroupService, private rService: RefreshService) {
+    console.log(this.group);
   }
 
   update() {
diff --git a/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/services/api/api-models.ts b/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/services/api/api-models.ts
index 3c91ae1..c5cd9be 100644
--- a/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/services/api/api-models.ts
+++ b/src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/services/api/api-models.ts
@@ -23,7 +23,7 @@ export interface Group {
     id?: number;
     name?: string;
     adSync?: boolean;
-    internal?: boolean;
+    internal: boolean;
     active?: boolean;
     comment?: string;
     addedWho?: string;