diff --git a/qutebrowser/config/config.py b/qutebrowser/config/config.py
index b05936473..baeaf8307 100644
--- a/qutebrowser/config/config.py
+++ b/qutebrowser/config/config.py
@@ -24,7 +24,7 @@ import contextlib
 import functools
 
 from PyQt5.QtCore import pyqtSignal, pyqtSlot, QObject, QUrl
-from PyQt5.QtWidgets import QApplication, QMessageBox
+from PyQt5.QtWidgets import QMessageBox
 
 from qutebrowser.config import configdata, configexc, configtypes, configfiles
 from qutebrowser.utils import utils, objreg, message, log, usertypes
diff --git a/qutebrowser/config/configexc.py b/qutebrowser/config/configexc.py
index a5332fe6e..b81461dfa 100644
--- a/qutebrowser/config/configexc.py
+++ b/qutebrowser/config/configexc.py
@@ -98,6 +98,7 @@ class ConfigFileErrors(Error):
         self.errors = errors
 
     def to_html(self):
+        """Get the error texts as a HTML snippet."""
         from qutebrowser.utils import jinja
         template = jinja.environment.from_string("""
         Errors occurred while reading {{ basename }}:
diff --git a/qutebrowser/config/configfiles.py b/qutebrowser/config/configfiles.py
index e72919736..e7ca548f7 100644
--- a/qutebrowser/config/configfiles.py
+++ b/qutebrowser/config/configfiles.py
@@ -126,7 +126,7 @@ class ConfigAPI:
             self.errors.append(configexc.ConfigErrorDesc(text, e))
 
     def finalize(self):
-        """Needs to get called after reading config.py is done."""
+        """Do work which needs to be done after reading config.py."""
         self._config.update_mutables()
 
     def get(self, name):
diff --git a/qutebrowser/utils/error.py b/qutebrowser/utils/error.py
index 7b62d8146..0d045bf19 100644
--- a/qutebrowser/utils/error.py
+++ b/qutebrowser/utils/error.py
@@ -19,7 +19,6 @@
 
 """Tools related to error printing/displaying."""
 
-from PyQt5.QtCore import Qt
 from PyQt5.QtWidgets import QMessageBox
 
 from qutebrowser.utils import log, utils
diff --git a/scripts/dev/run_vulture.py b/scripts/dev/run_vulture.py
index 5e31d0b8f..fd16a656c 100755
--- a/scripts/dev/run_vulture.py
+++ b/scripts/dev/run_vulture.py
@@ -105,6 +105,9 @@ def whitelist_generator():
 
     for name, member in inspect.getmembers(configtypes, inspect.isclass):
         yield 'qutebrowser.config.configtypes.' + name
+    yield 'qutebrowser.config.configexc.ConfigErrorDesc.traceback'
+    yield 'qutebrowser.config.configfiles.ConfigAPI.load_autoconfig'
+    yield 'types.ModuleType.c'  # configfiles:read_config_py
 
     yield 'include_aliases'
     ## FIXME:conf TODO