diff --git a/src/viewerModule/viewerCmp/viewerCmp.component.ts b/src/viewerModule/viewerCmp/viewerCmp.component.ts
index abd782459a47ffa29451408135cb42153fb86d55..2ac67737f0ad1f28472f8c1c4c09dac7f91faab8 100644
--- a/src/viewerModule/viewerCmp/viewerCmp.component.ts
+++ b/src/viewerModule/viewerCmp/viewerCmp.component.ts
@@ -200,6 +200,7 @@ export class ViewerCmp implements OnDestroy {
 
   public pliVol$ = merge(
     this._pliVol$?.pipe(
+      filter(arr => arr.length > 0),
       mapTo({
         title: this._pliTitle,
         description: this._pliDesc,