diff --git a/python/tkterminal.py b/python/tkterminal.py
index f5d514ed..e1f69936 100644
--- a/python/tkterminal.py
+++ b/python/tkterminal.py
@@ -6,6 +6,7 @@
 import tkinter as Tk_
 from tkinter import ttk
 from tkinter.font import Font
+from tkinter.font import families as font_families
 from tkinter.messagebox import askyesno
 from IPython.utils import io