diff --git a/mindspore/parallel/_ps_context.py b/mindspore/parallel/_ps_context.py
index 0cbcec84cd3..c0ba1690b28 100644
--- a/mindspore/parallel/_ps_context.py
+++ b/mindspore/parallel/_ps_context.py
@@ -22,7 +22,8 @@ _ps_context = None
 
 _check_positive_int_keys = ["server_num", "scheduler_port", "fl_server_port",
                             "start_fl_job_threshold", "start_fl_job_time_window", "update_model_time_window",
-                            "fl_iteration_num", "client_epoch_num", "client_batch_size", "scheduler_manage_port"]
+                            "fl_iteration_num", "client_epoch_num", "client_batch_size", "scheduler_manage_port",
+                            "cipher_time_window"]
 
 _check_non_negative_int_keys = ["worker_num"]