diff --git a/airflow-core/src/airflow/ui/src/queries/useCreateBackfill.ts b/airflow-core/src/airflow/ui/src/queries/useCreateBackfill.ts
index 956de3f843287..faebe834a1631 100644
--- a/airflow-core/src/airflow/ui/src/queries/useCreateBackfill.ts
+++ b/airflow-core/src/airflow/ui/src/queries/useCreateBackfill.ts
@@ -77,7 +77,7 @@ export const useCreateBackfill = ({ onSuccessConfirm }: { onSuccessConfirm: () =
     mutate({
       requestBody: {
         dag_id: dagId,
-        dag_run_conf: {},
+        dag_run_conf: data.requestBody.dag_run_conf ?? {},
         from_date: formattedDataIntervalStart,
         max_active_runs: data.requestBody.max_active_runs,
         reprocess_behavior: data.requestBody.reprocess_behavior,