diff --git a/test/tools/event_tree_to_graph/src/beans/event_tree.py b/test/tools/event_tree_to_graph/src/beans/event_tree.py
index 3524f43520cc2467672f87ec851c12fa2ef4903b..2a1d0e23302d00df486f00e5277551d77df78b62 100644
--- a/test/tools/event_tree_to_graph/src/beans/event_tree.py
+++ b/test/tools/event_tree_to_graph/src/beans/event_tree.py
@@ -107,6 +107,7 @@ class EventTree(BaseBean):
             return True
         return False
 
+    # check the parse result
     def check_parse_result(self):
         if self.is_parse_failed():
             self.parse_failed()