diff --git a/lib/wp/proxy.c b/lib/wp/proxy.c
index 81e164d1..2740edc5 100644
--- a/lib/wp/proxy.c
+++ b/lib/wp/proxy.c
@@ -50,7 +50,7 @@ enum {
 
 static guint signals[N_SIGNALS];
 
-G_DEFINE_TYPE (WpProxy, wp_proxy, G_TYPE_OBJECT);
+G_DEFINE_TYPE (WpProxy, wp_proxy, wp_object_get_type ());
 
 static void
 spa_dict_to_hashtable (const struct spa_dict * dict, GHashTable * htable)
diff --git a/lib/wp/proxy.h b/lib/wp/proxy.h
index 1ccf0c71..ffa763b5 100644
--- a/lib/wp/proxy.h
+++ b/lib/wp/proxy.h
@@ -9,13 +9,14 @@
 #ifndef __WP_PROXY_H__
 #define __WP_PROXY_H__
 
+#include "object.h"
 #include "proxy-registry.h"
 
 G_BEGIN_DECLS
 
 struct pw_proxy;
 
-G_DECLARE_FINAL_TYPE (WpProxy, wp_proxy, WP, PROXY, GObject)
+G_DECLARE_FINAL_TYPE (WpProxy, wp_proxy, WP, PROXY, WpObject)
 
 guint32 wp_proxy_get_id (WpProxy * self);
 guint32 wp_proxy_get_parent_id (WpProxy * self);