diff --git a/py/src/braintrust/logger.py b/py/src/braintrust/logger.py
index 1c21ebebc..682298a5a 100644
--- a/py/src/braintrust/logger.py
+++ b/py/src/braintrust/logger.py
@@ -1415,7 +1415,7 @@ def compute_metadata():
             args["base_exp_id"] = base_experiment_id
         elif base_experiment is not None:
             args["base_experiment"] = base_experiment
-        else:
+        elif merged_git_metadata_settings and merged_git_metadata_settings.collect != "none":
             args["ancestor_commits"] = list(get_past_n_ancestors())
 
         if dataset is not None: