diff --git a/envs/monkey_zoo/blackbox/test_configurations/smb_pth.py b/envs/monkey_zoo/blackbox/test_configurations/smb_pth.py
index bb1686385..84b386d21 100644
--- a/envs/monkey_zoo/blackbox/test_configurations/smb_pth.py
+++ b/envs/monkey_zoo/blackbox/test_configurations/smb_pth.py
@@ -34,7 +34,7 @@ def _add_tcp_ports(agent_configuration: AgentConfiguration) -> AgentConfiguratio
 
 
 agent_configuration = set_maximum_depth(noop_test_configuration.agent_configuration, 3)
-agent_configuration = set_keep_tunnel_open_time(noop_test_configuration.agent_configuration, 20)
+agent_configuration = set_keep_tunnel_open_time(agent_configuration, 20)
 agent_configuration = _add_exploiters(agent_configuration)
 agent_configuration = _add_subnets(agent_configuration)
 agent_configuration = _add_tcp_ports(agent_configuration)