diff --git a/apps/red-ui/src/app/screens/file/pdf-viewer/pdf-viewer.component.ts b/apps/red-ui/src/app/screens/file/pdf-viewer/pdf-viewer.component.ts
index 995716938..68f25faf9 100644
--- a/apps/red-ui/src/app/screens/file/pdf-viewer/pdf-viewer.component.ts
+++ b/apps/red-ui/src/app/screens/file/pdf-viewer/pdf-viewer.component.ts
@@ -187,7 +187,7 @@ export class PdfViewerComponent implements OnInit, AfterViewInit, OnChanges {
             'rotateClockwiseButton',
             'rotateCounterClockwiseButton',
             'annotationStyleEditButton',
-            'annotationGroupButton'
+            'annotationGroupButton1'
         ]);
 
         this.instance.setHeaderItems((header) => {