diff --git a/qutebrowser/app.py b/qutebrowser/app.py
index 3cb69e06d..838576296 100644
--- a/qutebrowser/app.py
+++ b/qutebrowser/app.py
@@ -3,7 +3,6 @@
 import os
 import sys
 import logging
-import traceback
 import subprocess
 import faulthandler
 from signal import signal, SIGINT
diff --git a/qutebrowser/widgets/browser.py b/qutebrowser/widgets/browser.py
index a892ea047..b011f2642 100644
--- a/qutebrowser/widgets/browser.py
+++ b/qutebrowser/widgets/browser.py
@@ -66,7 +66,8 @@ class TabbedBrowser(TabWidget):
         self.setCurrentWidget(tab)
         tab.loadProgress.connect(self._filter_factory(self.cur_progress))
         tab.loadFinished.connect(self._filter_factory(self.cur_load_finished))
-        tab.loadStarted.connect(lambda: self.sender().signal_cache.clear())
+        tab.loadStarted.connect(lambda:  # pylint: disable=unnecessary-lambda
+                                self.sender().signal_cache.clear())
         tab.loadStarted.connect(self._filter_factory(self.cur_load_started))
         tab.statusBarMessage.connect(
             self._filter_factory(self.cur_statusbar_message))