diff --git a/scripts/smoke_test_world_chat_and_sound.gd b/scripts/smoke_test_world_chat_and_sound.gd
index 9885e38..c48149e 100644
--- a/scripts/smoke_test_world_chat_and_sound.gd
+++ b/scripts/smoke_test_world_chat_and_sound.gd
@@ -135,7 +135,8 @@ func _run() -> void:
 	# 5. Verify world chat API send & retrieve (if backend reachable)
 	var api_client = root.get_node_or_null("ApiClient")
 	if api_client != null:
-		var reg_res = await api_client.register("chat_u_%d" % int(Time.get_unix_time_from_system()), "testpass123", "chat_%d@test.com" % int(Time.get_unix_time_from_system()), true)
+		var ts := int(Time.get_unix_time_from_system())
+		var reg_res = await api_client.register("chat_u_%d" % ts, "chat_%d@test.com" % ts, "testpass123", true)
 		if reg_res.ok:
 			var world_res = await api_client.create_world("ChatTestWorld_%d" % int(Time.get_unix_time_from_system()), "Chat test world")
 			if world_res.ok and world_res.data is Dictionary: