diff --git a/mainwindow.py b/mainwindow.py
index 7b5cc30..c46cf4b 100644
--- a/mainwindow.py
+++ b/mainwindow.py
@@ -518,6 +518,10 @@ def __init__(self, parent, kicad_provider=KicadProvider()):
 
     def quit_dialog(self, *_):
         """Destroy dialog on close."""
+        root = logging.getLogger()
+        root.removeHandler(self.logging_handler1)
+        root.removeHandler(self.logging_handler2)
+
         self.Destroy()
         self.EndModal(0)
 
@@ -1096,19 +1100,19 @@ def init_logger(self):
         root = logging.getLogger()
         root.setLevel(logging.DEBUG)
         # Log to stderr
-        handler1 = logging.StreamHandler(sys.stderr)
-        handler1.setLevel(logging.DEBUG)
+        self.logging_handler1 = logging.StreamHandler(sys.stderr)
+        self.logging_handler1.setLevel(logging.DEBUG)
         # and to our GUI
-        handler2 = LogBoxHandler(self.logbox, self)
-        handler2.setLevel(logging.DEBUG)
+        self.logging_handler2 = LogBoxHandler(self)
+        self.logging_handler2.setLevel(logging.DEBUG)
         formatter = logging.Formatter(
             "%(asctime)s - %(levelname)s - %(funcName)s -  %(message)s",
             datefmt="%Y.%m.%d %H:%M:%S",
         )
-        handler1.setFormatter(formatter)
-        handler2.setFormatter(formatter)
-        root.addHandler(handler1)
-        root.addHandler(handler2)
+        self.logging_handler1.setFormatter(formatter)
+        self.logging_handler2.setFormatter(formatter)
+        root.addHandler(self.logging_handler1)
+        root.addHandler(self.logging_handler2)
         self.logger = logging.getLogger(__name__)
 
     def __del__(self):
@@ -1119,9 +1123,8 @@ def __del__(self):
 class LogBoxHandler(logging.StreamHandler):
     """Logging class for the logging textbox at th ebottom of the mainwindow."""
 
-    def __init__(self, textctrl, event_destination):
+    def __init__(self, event_destination):
         logging.StreamHandler.__init__(self)
-        self.textctrl = textctrl
         self.event_destination = event_destination
 
     def emit(self, record):