diff --git a/qutebrowser/commands/utils.py b/qutebrowser/commands/utils.py
index 87c927f74..43d394059 100644
--- a/qutebrowser/commands/utils.py
+++ b/qutebrowser/commands/utils.py
@@ -63,7 +63,8 @@ class CommandParser(QObject):
         try:
             self.cmd.check(self.args)
         except ArgumentCountError:
-            self.error.emit("{}: invalid argument count".format(self.cmd.mainname))
+            self.error.emit("{}: invalid argument count".format(
+                self.cmd.mainname))
             raise
 
     def _run(self, count=None):
diff --git a/qutebrowser/widgets/browser.py b/qutebrowser/widgets/browser.py
index e607e2f76..c72b0aba3 100644
--- a/qutebrowser/widgets/browser.py
+++ b/qutebrowser/widgets/browser.py
@@ -47,7 +47,8 @@ class TabbedBrowser(TabWidget):
             lambda *args: self._filter_signals(self.cur_load_started, *args))
         # FIXME does QtWebView even do something sensible with that signal?
         tab.statusBarMessage.connect(
-            lambda *args: self._filter_signals(self.cur_statusbar_message, *args))
+            lambda *args: self._filter_signals(self.cur_statusbar_message,
+                                               *args))
         tab.scroll_pos_changed.connect(self._scroll_pos_changed_handler)
         # FIXME should we really bind this to loadStarted? Sometimes the URL
         # isn't set correctly at this point, e.g. when doing
diff --git a/qutebrowser/widgets/completion.py b/qutebrowser/widgets/completion.py
index cdfa1f0f3..6979e529f 100644
--- a/qutebrowser/widgets/completion.py
+++ b/qutebrowser/widgets/completion.py
@@ -29,11 +29,13 @@ class CompletionView(QTreeView):
             {color[completion.category.fg]}
             {color[completion.category.bg]}
             border-top: 1px solid {color[completion.category.border.top]};
-            border-bottom: 1px solid {color[completion.category.border.bottom]};
+            border-bottom: 1px solid
+                {color[completion.category.border.bottom]};
         }}
         QTreeView::item:selected {{
             border-top: 1px solid {color[completion.item.selected.border.top]};
-            border-bottom: 1px solid {color[completion.item.selected.border.bottom]};
+            border-bottom: 1px solid
+                {color[completion.item.selected.border.bottom]};
             {color[completion.item.selected.bg]}
             {color[completion.item.selected.fg]}
         }}
diff --git a/qutebrowser/widgets/mainwindow.py b/qutebrowser/widgets/mainwindow.py
index 18816ef6f..aaaf41ca5 100644
--- a/qutebrowser/widgets/mainwindow.py
+++ b/qutebrowser/widgets/mainwindow.py
@@ -34,7 +34,8 @@ class MainWindow(QMainWindow):
         self.status.resized.connect(self.completion.resize_to_bar)
         self.tabs.cur_progress.connect(self.status.prog.set_progress)
         self.tabs.cur_load_finished.connect(self.status.prog.load_finished)
-        self.tabs.cur_load_started.connect(lambda: self.status.prog.set_progress(0))
+        self.tabs.cur_load_started.connect(lambda:
+            self.status.prog.set_progress(0))
         self.tabs.cur_scroll_perc_changed.connect(self.status.txt.set_perc)
         self.tabs.cur_statusbar_message.connect(self.status.txt.set_text)
         self.status.cmd.esc_pressed.connect(self.tabs.setFocus)