diff --git a/openhands/events/observation/browse.py b/openhands/events/observation/browse.py
index 1052aaf17a91..2ab73f047d8a 100644
--- a/openhands/events/observation/browse.py
+++ b/openhands/events/observation/browse.py
@@ -100,5 +100,4 @@ def get_axtree_str(self, filter_visible_only: bool = False) -> str:
             skip_generic=False,
             filter_visible_only=filter_visible_only,
         )
-        self._axtree_str = cur_axtree_txt
         return cur_axtree_txt