diff --git a/PyInstaller/lib/modulegraph/modulegraph.py b/PyInstaller/lib/modulegraph/modulegraph.py
index f4acf15cce9..7435b5ec02f 100644
--- a/PyInstaller/lib/modulegraph/modulegraph.py
+++ b/PyInstaller/lib/modulegraph/modulegraph.py
@@ -26,8 +26,6 @@
 from collections import deque, namedtuple
 import warnings
 
-from typing import Optional
-
 from altgraph.ObjectGraph import ObjectGraph
 from altgraph import GraphError