diff --git a/src/video2x_gui.py b/src/video2x_gui.py
index 8aa13be..824d84a 100755
--- a/src/video2x_gui.py
+++ b/src/video2x_gui.py
@@ -19,6 +19,7 @@ from tkinter import messagebox
 from tkinter import ttk
 from tkinter.filedialog import *
 import pathlib
+import sys
 import tempfile
 import threading
 import time