diff --git a/direct/src/tkwidgets/Valuator.py b/direct/src/tkwidgets/Valuator.py
index 8b88d98680..39e0c8d73f 100644
--- a/direct/src/tkwidgets/Valuator.py
+++ b/direct/src/tkwidgets/Valuator.py
@@ -7,6 +7,7 @@ from direct.showbase.TkGlobal import *
 from . import WidgetPropertiesDialog
 import Pmw
 from direct.directtools.DirectUtil import getTkColorString
+from panda3d.core import Vec4
 
 if sys.version_info >= (3, 0):
     from tkinter.colorchooser import askcolor