diff --git a/gdk/x11/gdkdrawable-x11.c b/gdk/x11/gdkdrawable-x11.c
index 68379bf7d2..e48d8df286 100644
--- a/gdk/x11/gdkdrawable-x11.c
+++ b/gdk/x11/gdkdrawable-x11.c
@@ -1463,7 +1463,7 @@ gdk_x11_ref_cairo_surface (GdkDrawable *drawable)
     {
       int width, height;
   
-      gdk_drawable_get_size (drawable, &width, &height);
+      gdk_drawable_get_size (impl->wrapper, &width, &height);
 
       impl->cairo_surface = _gdk_windowing_create_cairo_surface (drawable, width, height);