diff --git a/gdk/gdk.symbols b/gdk/gdk.symbols
index 1f99c6406c..d299c0638b 100644
--- a/gdk/gdk.symbols
+++ b/gdk/gdk.symbols
@@ -610,6 +610,7 @@ gdk_x11_window_set_theme_variant
 gdk_x11_window_set_hide_titlebar_when_maximized
 gdk_x11_window_set_user_time
 gdk_x11_window_set_utf8_property
+gdk_x11_window_set_frame_sync_enabled
 gdk_x11_xatom_to_atom
 gdk_x11_xatom_to_atom_for_display
 #endif