diff --git a/pyqtgraph/debug.py b/pyqtgraph/debug.py
index 1d12e9e0..15d1fb3c 100644
--- a/pyqtgraph/debug.py
+++ b/pyqtgraph/debug.py
@@ -5,14 +5,21 @@ Copyright 2010  Luke Campagnola
 Distributed under MIT/X11 license. See license.txt for more information.
 """
 
+
 from __future__ import print_function
 
 import sys, traceback, time, gc, re, types, weakref, inspect, os, cProfile, threading
+import warnings
 from . import ptime
 from numpy import ndarray
-from .Qt import QtCore, QtGui
-from .util.mutex import Mutex
+from .Qt import QtCore, QT_LIB
 from .util import cprint
+if sys.version.startswith("3.8") and QT_LIB == "PySide2":
+    from .Qt import PySide2
+    if tuple(map(int, PySide2.__version__.split("."))) < (5, 14):
+        warnings.warn("Due to PYSIDE-1140, ThreadChase and ThreadColor won't work")
+from .util.mutex import Mutex
+
 
 __ftraceDepth = 0
 def ftrace(func):