diff --git a/examples/preferential-optimization/evaluator.py b/examples/preferential-optimization/evaluator.py
index dc660691..c03f598b 100644
--- a/examples/preferential-optimization/evaluator.py
+++ b/examples/preferential-optimization/evaluator.py
@@ -12,7 +12,6 @@ from optuna_dashboard.artifact.file_system import FileSystemBackend
 import streamlit as st
 
 from optuna_dashboard.preferential import load_study
-from optuna_dashboard.
 
 
 STORAGE_URL = "sqlite:///st-example.db"