diff --git a/clients/nested.c b/clients/nested.c
index 11867c400..856e64cb9 100644
--- a/clients/nested.c
+++ b/clients/nested.c
@@ -268,7 +268,7 @@ surface_attach(struct wl_client *client,
 {
 	struct nested_surface *surface = wl_resource_get_user_data(resource);
 	struct nested *nested = surface->nested;
-	struct wl_buffer *buffer = wl_resource_get_user_data(buffer_resource);
+	void *buffer = wl_resource_get_user_data(buffer_resource);
 	EGLint format, width, height;
 	cairo_device_t *device;