diff --git a/src/cairo-xlib-render-compositor.c b/src/cairo-xlib-render-compositor.c
index 94abe9ee3..10360dbec 100644
--- a/src/cairo-xlib-render-compositor.c
+++ b/src/cairo-xlib-render-compositor.c
@@ -250,6 +250,10 @@ draw_image_boxes (void *_dst,
     cairo_int_status_t status;
     int i;
 
+    if (image->base.device == dst->base.device &&
+	image->depth != dst->depth)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
     if (image->base.device == dst->base.device &&
 	image->depth == dst->depth &&
 	_cairo_xlib_shm_surface_get_pixmap (&image->base))