diff --git a/test/test_use_gui.py b/test/test_use_gui.py
index c5507b0..3bebb28 100644
--- a/test/test_use_gui.py
+++ b/test/test_use_gui.py
@@ -41,7 +41,10 @@ def do_raise(_, name, desc):
 # Set the exception hook to our wrapping function
 sys.excepthook = lambda *args: sys._excepthook(*args)
 
-app = QtWidgets.QApplication(sys.argv)
+if not QtWidgets.QApplication.instance():
+    app = QtWidgets.QApplication(sys.argv)
+else:
+    app = QtWidgets.QApplication.instance()
 font = QtGui.QFont("Arial", 10)
 app.setFont(font)