diff --git a/kubernetes/client/models/events_v1_event.py b/kubernetes/client/models/events_v1_event.py
index 27c0e606c8..17bcc10a7f 100644
--- a/kubernetes/client/models/events_v1_event.py
+++ b/kubernetes/client/models/events_v1_event.py
@@ -287,9 +287,6 @@ def event_time(self, event_time):
         :param event_time: The event_time of this EventsV1Event.  # noqa: E501
         :type: datetime
         """
-        if self.local_vars_configuration.client_side_validation and event_time is None:  # noqa: E501
-            raise ValueError("Invalid value for `event_time`, must not be `None`")  # noqa: E501
-
         self._event_time = event_time
 
     @property
diff --git a/kubernetes/client/models/v1beta1_event.py b/kubernetes/client/models/v1beta1_event.py
index ee4331d8f7..5c3d817c6a 100644
--- a/kubernetes/client/models/v1beta1_event.py
+++ b/kubernetes/client/models/v1beta1_event.py
@@ -287,9 +287,6 @@ def event_time(self, event_time):
         :param event_time: The event_time of this V1beta1Event.  # noqa: E501
         :type: datetime
         """
-        if self.local_vars_configuration.client_side_validation and event_time is None:  # noqa: E501
-            raise ValueError("Invalid value for `event_time`, must not be `None`")  # noqa: E501
-
         self._event_time = event_time
 
     @property