diff --git a/python/helpers/pycharm/_jb_runner_tools.py b/python/helpers/pycharm/_jb_runner_tools.py
index 54659293a4cf..ffdc618ce285 100644
--- a/python/helpers/pycharm/_jb_runner_tools.py
+++ b/python/helpers/pycharm/_jb_runner_tools.py
@@ -154,6 +154,8 @@ PARSE_FUNC = None
 
 
 class NewTeamcityServiceMessages(_old_service_messages):
+    _latest_subtest_result = None
+    
     def message(self, messageName, **properties):
         # Intellij may fail to process message if it has char just before it.
         # Space before message has no visible affect, but saves from such cases