diff --git a/orquesta/rehearsing.py b/orquesta/rehearsing.py
index db94cb52..113d477e 100644
--- a/orquesta/rehearsing.py
+++ b/orquesta/rehearsing.py
@@ -264,6 +264,7 @@ def __init__(self, session, *args, **kwargs):
                 "The session object is not type of WorkflowTestCase or WorkflowRerunTestCase."
             )
 
+        self.maxDiff = None
         self.session = session
         self.inspection_errors = {}
         self.rerun = False