diff --git a/src/backends/native/meta-kms-device.c b/src/backends/native/meta-kms-device.c
index 63aea26cd..6cf5c7141 100644
--- a/src/backends/native/meta-kms-device.c
+++ b/src/backends/native/meta-kms-device.c
@@ -309,8 +309,6 @@ meta_kms_device_process_update_sync (MetaKmsDevice     *device,
   MetaKms *kms = META_KMS (meta_kms_device_get_kms (device));
   PostUpdateData data;
 
-  meta_kms_update_seal (update);
-
   data = (PostUpdateData) {
     .update = update,
     .flags = flags,
@@ -347,8 +345,6 @@ meta_kms_device_post_update (MetaKmsDevice       *device,
 
   g_return_if_fail (meta_kms_update_get_device (update) == device);
 
-  meta_kms_update_seal (update);
-
   data = g_new0 (PostUpdateData, 1);
   *data = (PostUpdateData) {
     .update = update,
diff --git a/src/backends/native/meta-kms-update-private.h b/src/backends/native/meta-kms-update-private.h
index 477b2dd53..fb3bde21d 100644
--- a/src/backends/native/meta-kms-update-private.h
+++ b/src/backends/native/meta-kms-update-private.h
@@ -156,11 +156,6 @@ MetaKmsFeedback * meta_kms_feedback_new_passed (GList *failed_planes);
 MetaKmsFeedback * meta_kms_feedback_new_failed (GList  *failed_planes,
                                                 GError *error);
 
-void meta_kms_update_seal (MetaKmsUpdate *update);
-
-META_EXPORT_TEST
-gboolean meta_kms_update_is_sealed (MetaKmsUpdate *update);
-
 void meta_kms_plane_assignment_set_rotation (MetaKmsPlaneAssignment *plane_assignment,
                                              MetaKmsPlaneRotation    rotation);
 
diff --git a/src/backends/native/meta-kms-update.c b/src/backends/native/meta-kms-update.c
index 0c9cdf22b..3145538cb 100644
--- a/src/backends/native/meta-kms-update.c
+++ b/src/backends/native/meta-kms-update.c
@@ -268,7 +268,6 @@ meta_kms_update_assign_plane (MetaKmsUpdate          *update,
   MetaKmsPlaneAssignment *plane_assignment;
   MetaKmsAssignPlaneFlag old_flags;
 
-  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
   g_assert (meta_kms_plane_get_device (plane) == update->device);
   g_assert (meta_kms_plane_get_plane_type (plane) !=
@@ -305,7 +304,6 @@ meta_kms_update_unassign_plane (MetaKmsUpdate *update,
 {
   MetaKmsPlaneAssignment *plane_assignment;
 
-  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
   g_assert (meta_kms_plane_get_device (plane) == update->device);
 
@@ -331,7 +329,6 @@ meta_kms_update_mode_set (MetaKmsUpdate *update,
 {
   MetaKmsModeSet *mode_set;
 
-  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
 
   mode_set = g_new0 (MetaKmsModeSet, 1);
@@ -376,7 +373,6 @@ meta_kms_update_set_underscanning (MetaKmsUpdate    *update,
 {
   MetaKmsConnectorUpdate *connector_update;
 
-  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_connector_get_device (connector) == update->device);
 
   connector_update = ensure_connector_update (update, connector);
@@ -392,7 +388,6 @@ meta_kms_update_unset_underscanning (MetaKmsUpdate    *update,
 {
   MetaKmsConnectorUpdate *connector_update;
 
-  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_connector_get_device (connector) == update->device);
 
   connector_update = ensure_connector_update (update, connector);
@@ -495,7 +490,6 @@ meta_kms_update_set_crtc_gamma (MetaKmsUpdate      *update,
   MetaGammaLut *gamma_update = NULL;
   const MetaKmsCrtcState *crtc_state = meta_kms_crtc_get_current_state (crtc);
 
-  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
 
   if (gamma)
@@ -524,7 +518,6 @@ meta_kms_update_add_page_flip_listener (MetaKmsUpdate                       *upd
 {
   MetaKmsPageFlipListener *listener;
 
-  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
 
   listener = g_new0 (MetaKmsPageFlipListener, 1);
@@ -549,8 +542,6 @@ meta_kms_update_set_custom_page_flip (MetaKmsUpdate             *update,
 {
   MetaKmsCustomPageFlip *custom_page_flip;
 
-  g_assert (!meta_kms_update_is_sealed (update));
-
   custom_page_flip = g_new0 (MetaKmsCustomPageFlip, 1);
   custom_page_flip->func = func;
   custom_page_flip->user_data = user_data;
@@ -589,7 +580,6 @@ void
 meta_kms_plane_assignment_set_rotation (MetaKmsPlaneAssignment *plane_assignment,
                                         MetaKmsPlaneRotation    rotation)
 {
-  g_assert (!meta_kms_update_is_sealed (plane_assignment->update));
   g_warn_if_fail (rotation);
 
   plane_assignment->rotation = rotation;
@@ -728,20 +718,6 @@ meta_kms_update_get_crtc_color_updates (MetaKmsUpdate *update)
   return update->crtc_color_updates;
 }
 
-void
-meta_kms_update_seal (MetaKmsUpdate *update)
-{
-  g_warn_if_fail (!update->is_sealed);
-
-  update->is_sealed = TRUE;
-}
-
-gboolean
-meta_kms_update_is_sealed (MetaKmsUpdate *update)
-{
-  return update->is_sealed;
-}
-
 MetaKmsDevice *
 meta_kms_update_get_device (MetaKmsUpdate *update)
 {
diff --git a/src/tests/native-kms-updates.c b/src/tests/native-kms-updates.c
index 6f09b0143..1183f49dc 100644
--- a/src/tests/native-kms-updates.c
+++ b/src/tests/native-kms-updates.c
@@ -113,7 +113,6 @@ meta_test_kms_update_sanity (void)
 
   update = meta_kms_update_new (device);
   g_assert (meta_kms_update_get_device (update) == device);
-  g_assert_false (meta_kms_update_is_sealed (update));
   g_assert_null (meta_kms_update_get_primary_plane_assignment (update, crtc));
   g_assert_null (meta_kms_update_get_plane_assignments (update));
   g_assert_null (meta_kms_update_get_mode_sets (update));