diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index a24b61799..84089f868 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -199,6 +199,7 @@ Park Hyunwoo <phu54321@naver.com>
 Tomas Fabrizio Orsi <torsi@fi.uba.ar>
 Sawan Sunar <sawansunar24072002@gmail.com>
 hideo aoyama <https://github.com/boukendesho>
+Ross Brown <rbrownwsws@googlemail.com>
 
 ********************
 
diff --git a/qt/aqt/__init__.py b/qt/aqt/__init__.py
index 2c39253c3..eca04b261 100644
--- a/qt/aqt/__init__.py
+++ b/qt/aqt/__init__.py
@@ -3,6 +3,7 @@
 
 from __future__ import annotations
 
+import atexit
 import logging
 import sys
 from collections.abc import Callable
@@ -525,6 +526,7 @@ def setupGL(pm: aqt.profiles.ProfileManager) -> None:
             print(f"Qt {category}: {msg} {context}")
 
     qInstallMessageHandler(msgHandler)
+    atexit.register(qInstallMessageHandler, None)
 
     if driver == VideoDriver.OpenGL:
         # Leaving QT_OPENGL unset appears to sometimes produce different results