diff --git a/test/debug_logger.py b/test/debug_logger.py
index d3b0732b84..071885c605 100644
--- a/test/debug_logger.py
+++ b/test/debug_logger.py
@@ -249,6 +249,9 @@ class DebugLogger(FakeLogger):
 
 
 class DebugLogAdapter(utils.LogAdapter):
+    def __init__(self, *args, **kwargs):
+        super(DebugLogAdapter, self).__init__(*args, **kwargs)
+        self.txn_id = None
 
     def __getattribute__(self, name):
         try: