diff --git a/doc/tutorial3.c b/doc/tutorial3.c
index 3e0cd9c42..899488883 100644
--- a/doc/tutorial3.c
+++ b/doc/tutorial3.c
@@ -22,13 +22,14 @@ static void on_core_done(void *data, uint32_t id, int seq)
 
 static int roundtrip(struct pw_core *core, struct pw_main_loop *loop)
 {
-	struct roundtrip_data d = { .loop = loop };
-	struct spa_hook core_listener;
-	const struct pw_core_events core_events = {
+	static const struct pw_core_events core_events = {
 		PW_VERSION_CORE_EVENTS,
 		.done = on_core_done,
 	};
 
+	struct roundtrip_data d = { .loop = loop };
+	struct spa_hook core_listener;
+
 	pw_core_add_listener(core, &core_listener,
 				 &core_events, &d);