diff --git a/artiq/frontend/artiq_gui.py b/artiq/frontend/artiq_gui.py
index 4de976196..c5ba762f6 100755
--- a/artiq/frontend/artiq_gui.py
+++ b/artiq/frontend/artiq_gui.py
@@ -7,7 +7,6 @@ import os
 
 import PyQt5
 from quamash import QEventLoop, QtGui, QtCore
-assert QtGui is PyQt5.QtGui
 # pyqtgraph will pick up any already imported Qt binding.
 from pyqtgraph import dockarea