diff --git a/neps/plot/tensorboard_eval.py b/neps/plot/tensorboard_eval.py
index 395b5b9a..9259952c 100644
--- a/neps/plot/tensorboard_eval.py
+++ b/neps/plot/tensorboard_eval.py
@@ -91,7 +91,7 @@ def _initiate_internal_configurations() -> None:
         # on this object, OR even just use `get_in_process_trial()` in each call directly.
         tblogger.config_working_directory = trial.pipeline_dir
         tblogger.config_previous_directory = trial.disk.previous_pipeline_dir
-        tblogger.optimizer_dir = trial.disk.optimization_dir
+        tblogger.optimizer_dir = trial.disk.optimization_dir.parent
         tblogger.config = trial.config
 
     @staticmethod