diff --git a/src/atlasComponents/userAnnotations/tools/service.ts b/src/atlasComponents/userAnnotations/tools/service.ts
index 5af19480ff7b1259592a24f2b1bd6c9c85449ad5..ab789a0d32a9142e8484c69b1285c2dc41726269 100644
--- a/src/atlasComponents/userAnnotations/tools/service.ts
+++ b/src/atlasComponents/userAnnotations/tools/service.ts
@@ -502,7 +502,7 @@ export class ModularUserAnnotationToolService implements OnDestroy{
     /**
      * before unload, save annotations
      */
-     window.addEventListener('beforeunload', () => {
+    window.addEventListener('beforeunload', () => {
       this.storeAnnotation(this.managedAnnotations)
     })
   }