diff --git a/devices/integration_test/client/test_unb2_sim.py b/devices/integration_test/client/test_unb2_sim.py
index 1eb9972400f2121a6365b2fcb875ecbc2190cdff..d934c06fb6dfb40dad1c8b54dc00a00715deedc8 100644
--- a/devices/integration_test/client/test_unb2_sim.py
+++ b/devices/integration_test/client/test_unb2_sim.py
@@ -20,7 +20,7 @@ class TestUNB2Sim(base.IntegrationAsyncTestCase):
     async def test_opcua_connection(self):
         """Check if we can connect to unb2-sim"""
 
-        client = Client("opc.tcp://unb2-sim:4844")
+        client = Client("opc.tcp://unb2-sim:4841")
         root_node = None
 
         await client.connect()