diff --git a/apps/red-ui/src/app/modules/dossier/services/annotation-actions.service.ts b/apps/red-ui/src/app/modules/dossier/services/annotation-actions.service.ts
index 78d8a1e01..52978a165 100644
--- a/apps/red-ui/src/app/modules/dossier/services/annotation-actions.service.ts
+++ b/apps/red-ui/src/app/modules/dossier/services/annotation-actions.service.ts
@@ -283,7 +283,7 @@ export class AnnotationActionsService {
     }
 
     updateHiddenAnnotation(annotations: AnnotationWrapper[], viewerAnnotations: Annotation[], hidden: boolean) {
-        const annotationId = (viewerAnnotations[0] as any).Tw;
+        const annotationId = (viewerAnnotations[0] as any).Dx;
         const annotationToBeUpdated = annotations.find((a: AnnotationWrapper) => a.annotationId === annotationId);
         annotationToBeUpdated.hidden = hidden;
     }