diff --git a/src/pipewire/global.c b/src/pipewire/global.c
index aca3cfaaa..90b13f279 100644
--- a/src/pipewire/global.c
+++ b/src/pipewire/global.c
@@ -135,7 +135,12 @@ int pw_global_register(struct pw_global *global)
 
 	spa_list_append(&context->global_list, &global->link);
 	global->registered = true;
-	global->serial = ++serial;
+	global->serial = serial++;
+	if ((uint32_t)serial == SPA_ID_INVALID)
+		serial++;
+
+	pw_properties_setf(global->properties,
+			PW_KEY_OBJECT_SERIAL, "%"PRIu64, global->serial);
 
 	spa_list_for_each(registry, &context->registry_resource_list, link) {
 		uint32_t permissions = pw_global_get_permissions(global, registry->client);
diff --git a/src/pipewire/keys.h b/src/pipewire/keys.h
index 24cbf4e55..0a00fdcfb 100644
--- a/src/pipewire/keys.h
+++ b/src/pipewire/keys.h
@@ -64,6 +64,10 @@ extern "C" {
 /** object properties */
 #define PW_KEY_OBJECT_PATH		"object.path"		/**< unique path to construct the object */
 #define PW_KEY_OBJECT_ID		"object.id"		/**< a global object id */
+#define PW_KEY_OBJECT_SERIAL		"object.serial"		/**< a 64 bit object serial number. This is a number
+								  *  incremented for each object that is created.
+								  *  The lower 32 bits are guaranteed to never be
+								  *  SPA_ID_INVALID. */
 #define PW_KEY_OBJECT_LINGER		"object.linger"		/**< the object lives on even after the client
 								  *  that created it has been destroyed */
 #define PW_KEY_OBJECT_REGISTER		"object.register"	/**< If the object should be registered. */