diff --git a/src/backends/native/meta-kms-device.c b/src/backends/native/meta-kms-device.c
index c2c04e10a..4b391a584 100644
--- a/src/backends/native/meta-kms-device.c
+++ b/src/backends/native/meta-kms-device.c
@@ -309,6 +309,8 @@ 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,
diff --git a/src/backends/native/meta-kms-update-private.h b/src/backends/native/meta-kms-update-private.h
index 343628a49..362c29b30 100644
--- a/src/backends/native/meta-kms-update-private.h
+++ b/src/backends/native/meta-kms-update-private.h
@@ -140,12 +140,10 @@ MetaKmsFeedback * meta_kms_feedback_new_passed (GList *failed_planes);
 MetaKmsFeedback * meta_kms_feedback_new_failed (GList  *failed_planes,
                                                 GError *error);
 
-void meta_kms_update_lock (MetaKmsUpdate *update);
-
-void meta_kms_update_unlock (MetaKmsUpdate *update);
+void meta_kms_update_seal (MetaKmsUpdate *update);
 
 META_EXPORT_TEST
-gboolean meta_kms_update_is_locked (MetaKmsUpdate *update);
+gboolean meta_kms_update_is_sealed (MetaKmsUpdate *update);
 
 META_EXPORT_TEST
 MetaKmsDevice * meta_kms_update_get_device (MetaKmsUpdate *update);
diff --git a/src/backends/native/meta-kms-update.c b/src/backends/native/meta-kms-update.c
index 4d0bda8f5..ead8d2544 100644
--- a/src/backends/native/meta-kms-update.c
+++ b/src/backends/native/meta-kms-update.c
@@ -32,7 +32,7 @@ struct _MetaKmsUpdate
 {
   MetaKmsDevice *device;
 
-  gboolean is_locked;
+  gboolean is_sealed;
 
   GList *mode_sets;
   GList *plane_assignments;
@@ -224,7 +224,7 @@ meta_kms_update_assign_plane (MetaKmsUpdate          *update,
   MetaKmsPlaneAssignment *plane_assignment;
   MetaKmsAssignPlaneFlag old_flags;
 
-  g_assert (!meta_kms_update_is_locked (update));
+  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) !=
@@ -261,7 +261,7 @@ meta_kms_update_unassign_plane (MetaKmsUpdate *update,
 {
   MetaKmsPlaneAssignment *plane_assignment;
 
-  g_assert (!meta_kms_update_is_locked (update));
+  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);
 
@@ -287,7 +287,7 @@ meta_kms_update_mode_set (MetaKmsUpdate *update,
 {
   MetaKmsModeSet *mode_set;
 
-  g_assert (!meta_kms_update_is_locked (update));
+  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
 
   mode_set = g_new0 (MetaKmsModeSet, 1);
@@ -332,7 +332,7 @@ meta_kms_update_set_underscanning (MetaKmsUpdate    *update,
 {
   MetaKmsConnectorUpdate *connector_update;
 
-  g_assert (!meta_kms_update_is_locked (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);
@@ -348,7 +348,7 @@ meta_kms_update_unset_underscanning (MetaKmsUpdate    *update,
 {
   MetaKmsConnectorUpdate *connector_update;
 
-  g_assert (!meta_kms_update_is_locked (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);
@@ -417,7 +417,7 @@ 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_locked (update));
+  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
 
   if (gamma)
@@ -445,7 +445,7 @@ meta_kms_update_add_page_flip_listener (MetaKmsUpdate                       *upd
 {
   MetaKmsPageFlipListener *listener;
 
-  g_assert (!meta_kms_update_is_locked (update));
+  g_assert (!meta_kms_update_is_sealed (update));
   g_assert (meta_kms_crtc_get_device (crtc) == update->device);
 
   listener = g_new0 (MetaKmsPageFlipListener, 1);
@@ -469,7 +469,7 @@ meta_kms_update_set_custom_page_flip (MetaKmsUpdate             *update,
 {
   MetaKmsCustomPageFlip *custom_page_flip;
 
-  g_assert (!meta_kms_update_is_locked (update));
+  g_assert (!meta_kms_update_is_sealed (update));
 
   custom_page_flip = g_new0 (MetaKmsCustomPageFlip, 1);
   custom_page_flip->func = func;
@@ -509,7 +509,7 @@ void
 meta_kms_plane_assignment_set_rotation (MetaKmsPlaneAssignment *plane_assignment,
                                         MetaKmsPlaneRotation    rotation)
 {
-  g_assert (!meta_kms_update_is_locked (plane_assignment->update));
+  g_assert (!meta_kms_update_is_sealed (plane_assignment->update));
   g_warn_if_fail (rotation);
 
   plane_assignment->rotation = rotation;
@@ -630,21 +630,17 @@ meta_kms_update_get_crtc_color_updates (MetaKmsUpdate *update)
 }
 
 void
-meta_kms_update_lock (MetaKmsUpdate *update)
+meta_kms_update_seal (MetaKmsUpdate *update)
 {
-  update->is_locked = TRUE;
-}
+  g_warn_if_fail (!update->is_sealed);
 
-void
-meta_kms_update_unlock (MetaKmsUpdate *update)
-{
-  update->is_locked = FALSE;
+  update->is_sealed = TRUE;
 }
 
 gboolean
-meta_kms_update_is_locked (MetaKmsUpdate *update)
+meta_kms_update_is_sealed (MetaKmsUpdate *update)
 {
-  return update->is_locked;
+  return update->is_sealed;
 }
 
 MetaKmsDevice *
diff --git a/src/backends/native/meta-kms.c b/src/backends/native/meta-kms.c
index 45cd00a14..96e81cebe 100644
--- a/src/backends/native/meta-kms.c
+++ b/src/backends/native/meta-kms.c
@@ -264,8 +264,6 @@ meta_kms_post_pending_update_sync (MetaKms           *kms,
   if (!update)
     return NULL;
 
-  meta_kms_update_lock (update);
-
   feedback = meta_kms_device_process_update_sync (device, update, flags);
 
   result_listeners = meta_kms_update_take_result_listeners (update);
@@ -295,8 +293,6 @@ meta_kms_post_test_update_sync (MetaKms       *kms,
   g_assert (!meta_kms_update_get_mode_sets (update));
   g_assert (!meta_kms_update_get_connector_updates (update));
 
-  meta_kms_update_lock (update);
-
   flags = META_KMS_UPDATE_FLAG_TEST_ONLY;
   return meta_kms_device_process_update_sync (device, update, flags);
 }
diff --git a/src/tests/native-kms-updates.c b/src/tests/native-kms-updates.c
index dc7a99c95..e13d01cfa 100644
--- a/src/tests/native-kms-updates.c
+++ b/src/tests/native-kms-updates.c
@@ -66,7 +66,7 @@ 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_locked (update));
+  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));