diff --git a/src/app/components/shared/dialog/dialog-action-buttons/dialog-action-buttons.component.ts b/src/app/components/shared/dialog/dialog-action-buttons/dialog-action-buttons.component.ts
index f89dca267059c9956e222ef13b2ce1ce5776ced3..7529dadb1c988f8fdbb4ca890e6de88e22facc15 100644
--- a/src/app/components/shared/dialog/dialog-action-buttons/dialog-action-buttons.component.ts
+++ b/src/app/components/shared/dialog/dialog-action-buttons/dialog-action-buttons.component.ts
@@ -52,8 +52,7 @@ export class DialogActionButtonsComponent implements OnInit {
    */
   @Input() cancelButtonClickAction: (Function | undefined);
 
-  @Input() resetButtonClickAction: (Function | undefined);
-
+  
   /**
    * TRUE if some spacing will be rendered above the action buttons.
    */
diff --git a/src/app/components/shared/header/header.component.html b/src/app/components/shared/header/header.component.html
index 79b6b864862048df401d7b529a2d4bd3b8a44433..c489ff04be20e332e72154a42462a331c8a43801 100644
--- a/src/app/components/shared/header/header.component.html
+++ b/src/app/components/shared/header/header.component.html
@@ -16,7 +16,7 @@
       {{cTime}}
     </h2>
 
-    <ng-container *ngIf="room.closed">
+    <ng-container *ngIf="room && room.closed">
       <h1>{{'header.questions-blocked'|translate}}</h1>
     </ng-container>