diff --git a/aqt/errors.py b/aqt/errors.py
index cd96e4cc2..082857eaf 100644
--- a/aqt/errors.py
+++ b/aqt/errors.py
@@ -27,8 +27,13 @@ class ErrorHandler(QObject):
         self.timer = None
         self.errorTimer.connect(self._setTimer)
         self.pool = ""
+        self._oldstderr = sys.stderr
         sys.stderr = self
 
+    def unload(self):
+        sys.stderr = self._oldstderr
+        sys.excepthook = None
+
     def write(self, data):
         # dump to stdout
         sys.stdout.write(data)
diff --git a/aqt/main.py b/aqt/main.py
index dfbf2367f..7c1e23ca8 100644
--- a/aqt/main.py
+++ b/aqt/main.py
@@ -249,6 +249,8 @@ To import into a password protected profile, please open the profile before atte
         self.hide()
         if browser:
             self.showProfileManager()
+        else:
+            self.errorHandler.unload()
 
     # Collection load/unload
     ##########################################################################