diff --git a/prowler/providers/aws/services/backup/backup_service.py b/prowler/providers/aws/services/backup/backup_service.py
index 8e77349a..7b42c2e1 100644
--- a/prowler/providers/aws/services/backup/backup_service.py
+++ b/prowler/providers/aws/services/backup/backup_service.py
@@ -152,5 +152,5 @@ class BackupReportPlan(BaseModel):
     arn: str
     region: str
     name: str
-    last_attempted_execution_date: datetime
+    last_attempted_execution_date: Optional[datetime]
     last_successful_execution_date: Optional[datetime]