diff --git a/apps/client/src/app/services/import-activities.service.ts b/apps/client/src/app/services/import-activities.service.ts
index 9260b8800..0a58e3cdd 100644
--- a/apps/client/src/app/services/import-activities.service.ts
+++ b/apps/client/src/app/services/import-activities.service.ts
@@ -187,7 +187,7 @@ export class ImportActivitiesService {
       }
     }
 
-    return '';
+    return undefined;
   }
 
   private parseCurrency({