diff --git a/gdk/gdkdisplay.c b/gdk/gdkdisplay.c
index 34b0f014c1..bebe26f38c 100644
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -1149,7 +1149,7 @@ _gdk_display_get_next_serial (GdkDisplay *display)
  * [method@Gtk.Window.set_auto_startup_notification]
  * is called to disable that feature.
  *
- * Deprecated: 4.10. Using gdk_toplevel_set_startup_id() is sufficient.
+ * Deprecated: 4.10: Using [method@Gdk.Toplevel.set_startup_id] is sufficient
  */
 void
 gdk_display_notify_startup_complete (GdkDisplay  *display,
@@ -1168,6 +1168,8 @@ gdk_display_notify_startup_complete (GdkDisplay  *display,
  * if no ID has been defined.
  *
  * Returns: (nullable): the startup notification ID for @display
+ *
+ * Deprecated: 4.10
  */
 const char *
 gdk_display_get_startup_notification_id (GdkDisplay *display)
diff --git a/gdk/gdkdisplay.h b/gdk/gdkdisplay.h
index 3ab938ae11..b6bfa2c6cf 100644
--- a/gdk/gdkdisplay.h
+++ b/gdk/gdkdisplay.h
@@ -86,7 +86,7 @@ GdkClipboard *          gdk_display_get_primary_clipboard       (GdkDisplay
 GDK_DEPRECATED_IN_4_10_FOR(gdk_toplevel_set_startup_id)
 void     gdk_display_notify_startup_complete   (GdkDisplay    *display,
                                                 const char    *startup_id);
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_10
 const char * gdk_display_get_startup_notification_id (GdkDisplay *display);
 
 GDK_AVAILABLE_IN_ALL
diff --git a/gdk/x11/gdkdisplay-x11.c b/gdk/x11/gdkdisplay-x11.c
index e9e1b766d6..0e30ff23b5 100644
--- a/gdk/x11/gdkdisplay-x11.c
+++ b/gdk/x11/gdkdisplay-x11.c
@@ -2074,8 +2074,10 @@ gdk_x11_display_make_default (GdkDisplay *display)
   display_x11->startup_notification_id = NULL;
 
   startup_id = gdk_get_startup_notification_id ();
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   if (startup_id)
     gdk_x11_display_set_startup_notification_id (display, startup_id);
+G_GNUC_END_IGNORE_DEPRECATIONS
 }
 
 static void
@@ -2303,6 +2305,8 @@ gdk_x11_display_get_user_time (GdkDisplay *display)
  * Gets the startup notification ID for a display.
  * 
  * Returns: the startup notification ID for @display
+ *
+ * Deprecated: 4.10
  */
 const char *
 gdk_x11_display_get_startup_notification_id (GdkDisplay *display)
@@ -2329,7 +2333,9 @@ gdk_x11_display_get_startup_notification_id (GdkDisplay *display)
  * The startup ID is also what is used to signal that the startup is
  * complete (for example, when opening a window or when calling
  * gdk_display_notify_startup_complete()).
- **/
+ *
+ * Deprecated: 4.10: Using [method@Gdk.Toplevel.set_startup_id] is sufficient
+ */
 void
 gdk_x11_display_set_startup_notification_id (GdkDisplay  *display,
                                              const char *startup_id)
@@ -3042,7 +3048,9 @@ gdk_x11_display_class_init (GdkX11DisplayClass * class)
   display_class->get_app_launch_context = _gdk_x11_display_get_app_launch_context;
 
   display_class->get_next_serial = gdk_x11_display_get_next_serial;
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   display_class->get_startup_notification_id = gdk_x11_display_get_startup_notification_id;
+G_GNUC_END_IGNORE_DEPRECATIONS
   display_class->notify_startup_complete = gdk_x11_display_notify_startup_complete;
   display_class->create_surface = _gdk_x11_display_create_surface;
   display_class->get_keymap = gdk_x11_display_get_keymap;
diff --git a/gdk/x11/gdkx11display.h b/gdk/x11/gdkx11display.h
index 8633eadddb..46b7627db5 100644
--- a/gdk/x11/gdkx11display.h
+++ b/gdk/x11/gdkx11display.h
@@ -80,9 +80,9 @@ Cursor        gdk_x11_display_get_xcursor      (GdkDisplay  *display,
 GDK_AVAILABLE_IN_ALL
 guint32       gdk_x11_display_get_user_time (GdkDisplay *display);
 
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_10
 const char * gdk_x11_display_get_startup_notification_id         (GdkDisplay *display);
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_10
 void          gdk_x11_display_set_startup_notification_id         (GdkDisplay  *display,
                                                                    const char *startup_id);
 GDK_AVAILABLE_IN_ALL
diff --git a/gtk/gtkapplication-x11.c b/gtk/gtkapplication-x11.c
index f834c78e04..60a0613cb1 100644
--- a/gtk/gtkapplication-x11.c
+++ b/gtk/gtkapplication-x11.c
@@ -87,7 +87,9 @@ gtk_application_impl_x11_before_emit (GtkApplicationImpl *impl,
 
   g_variant_lookup (platform_data, "desktop-startup-id", "&s", &startup_notification_id);
 
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   gdk_x11_display_set_startup_notification_id (gdk_display_get_default (), startup_notification_id);
+G_GNUC_END_IGNORE_DEPRECATIONS
 }
 
 static void
diff --git a/gtk/gtkapplication.c b/gtk/gtkapplication.c
index d8dfd5c2d1..97a09ff0ca 100644
--- a/gtk/gtkapplication.c
+++ b/gtk/gtkapplication.c
@@ -321,7 +321,9 @@ gtk_application_add_platform_data (GApplication    *application,
     {
       const char *startup_id;
 
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
       startup_id = gdk_display_get_startup_notification_id (display);
+G_GNUC_END_IGNORE_DEPRECATIONS
       if (startup_id && g_utf8_validate (startup_id, -1, NULL))
         {
           g_variant_builder_add (builder, "{sv}", "activation-token",