diff --git a/gamestonk_terminal/portfolio_optimization/port_optimization_controller.py b/gamestonk_terminal/portfolio_optimization/port_optimization_controller.py
index e7cc26b5bc1..1026c22d5a3 100644
--- a/gamestonk_terminal/portfolio_optimization/port_optimization_controller.py
+++ b/gamestonk_terminal/portfolio_optimization/port_optimization_controller.py
@@ -3,7 +3,7 @@ __docformat__ = "numpy"
 
 
 import argparse
-from typing import List, Set
+from typing import List
 import matplotlib.pyplot as plt
 import pandas as pd
 from prompt_toolkit.completion import NestedCompleter