diff --git a/src/app/app.component.html b/src/app/app.component.html
index 103c6ec..8ecd9c9 100644
--- a/src/app/app.component.html
+++ b/src/app/app.component.html
@@ -154,7 +154,7 @@
             @else if (state.display) {
               <mat-icon>desktop_windows</mat-icon>
             }
-            @else if (state.live) {
+            @else if (state.live()) {
               <mat-icon>videocam</mat-icon>
             }
           </button>
@@ -193,7 +193,7 @@
             (click)="showDisplay()"
             class="displayButton"
             [class.active]="state.display"
-            [disabled]="state.live"
+            [disabled]="state.live()"
             matTooltip="{{ 'SHOW_PRESENTATION' | translate }}"
             matTooltipPosition="above">
             <mat-icon>videocam</mat-icon>
@@ -242,7 +242,7 @@
             @else if (state.display) {
               <mat-icon>desktop_windows</mat-icon>
             }
-            @else if (state.live) {
+            @else if (state.live()) {
               <mat-icon>videocam</mat-icon>
             }
           </button>
@@ -278,7 +278,7 @@
             mat-icon-button (click)="showDisplay()"
             class="displayButton"
             [class.active]="state.display"
-            [disabled]="state.live"
+            [disabled]="state.live()"
             matTooltip="{{ 'SHOW_PRESENTATION' | translate }}"
             matTooltipPosition="above">
             <mat-icon>videocam</mat-icon>