diff --git a/tests/test_bec_dispatcher.py b/tests/test_bec_dispatcher.py
index 49791781..e4694487 100644
--- a/tests/test_bec_dispatcher.py
+++ b/tests/test_bec_dispatcher.py
@@ -5,7 +5,7 @@ import pytest
 from bec_lib.connector import MessageObject
 from bec_lib.messages import ScanMessage
 
-msg = MessageObject(topic="", value=ScanMessage(point_id=0, scan_id=0, data={}))
+msg = MessageObject(topic="", value=ScanMessage(point_id=0, scan_id="scan_id", data={}))
 
 
 @pytest.fixture(name="consumer")
@@ -205,7 +205,7 @@ def test_connect_one_slot_multiple_topics_single_callback(bec_dispatcher, consum
     # Simulate messages being published on each topic
     for topic in topics:
         msg_with_topic = MessageObject(
-            topic=topic, value=ScanMessage(point_id=0, scan_id=0, data={})
+            topic=topic, value=ScanMessage(point_id=0, scan_id="scan_id", data={})
         )
         consumer.register.call_args.kwargs["cb"](msg_with_topic)