diff --git a/tests/python/lib/k2_server.py b/tests/python/lib/k2_server.py
index 35f6fab30b..9fa4c77a04 100644
--- a/tests/python/lib/k2_server.py
+++ b/tests/python/lib/k2_server.py
@@ -67,6 +67,7 @@ def _process_json_log(self, log_record):
         log_record.pop("instance_id", "")
         log_record.pop("file", "")
         log_record.pop("line", "")
+        log_record.pop("hostname", "")
 
         # convert raw string to python dict
         tags = log_record.get("tags")