diff --git a/qutebrowser/browser/commands.py b/qutebrowser/browser/commands.py
index 2e29c9b31..9b8c9f7d5 100644
--- a/qutebrowser/browser/commands.py
+++ b/qutebrowser/browser/commands.py
@@ -452,14 +452,14 @@ class CommandDispatcher:
         hintmanager = objreg.get('hintmanager', scope='tab')
         if where == 'prev':
             hintmanager.follow_prevnext(frame, url, prev=True, tab=tab,
-                                        background=background, window=window)
+                                        background=bg, window=window)
         elif where == 'next':
             hintmanager.follow_prevnext(frame, url, prev=False, tab=tab,
-                                        background=background, window=window)
+                                        background=bg, window=window)
         elif where == 'up':
-            self._navigate_up(url, tab, background, window)
+            self._navigate_up(url, tab, bg, window)
         elif where in ('decrement', 'increment'):
-            self._navigate_incdec(url, where, tab, background, window)
+            self._navigate_incdec(url, where, tab, bg, window)
         else:
             raise ValueError("Got called with invalid value {} for "
                              "`where'.".format(where))
diff --git a/qutebrowser/commands/command.py b/qutebrowser/commands/command.py
index 8b91cfcfe..17dc2f8f2 100644
--- a/qutebrowser/commands/command.py
+++ b/qutebrowser/commands/command.py
@@ -366,7 +366,7 @@ class Command:
             value = self._type_conv[param.name](value)
         return name, value
 
-    def _get_call_args(self, win_id):
+    def _get_call_args(self, win_id):  # noqa
         """Get arguments for a function call.
 
         Args:
diff --git a/qutebrowser/keyinput/modeparsers.py b/qutebrowser/keyinput/modeparsers.py
index 592948b7e..29505f04d 100644
--- a/qutebrowser/keyinput/modeparsers.py
+++ b/qutebrowser/keyinput/modeparsers.py
@@ -168,7 +168,7 @@ class HintKeyParser(keyparser.CommandKeyParser):
             raise TypeError("Type {} is no Type member!".format(keytype))
         if keytype == self.Type.chain:
             hintmanager = objreg.get('hintmanager', scope='tab',
-                                    window=self._win_id, tab='current')
+                                     window=self._win_id, tab='current')
             hintmanager.fire(cmdstr)
         else:
             # execute as command
diff --git a/qutebrowser/utils/objreg.py b/qutebrowser/utils/objreg.py
index 2cb3f0cb9..d6dca188f 100644
--- a/qutebrowser/utils/objreg.py
+++ b/qutebrowser/utils/objreg.py
@@ -151,7 +151,7 @@ def _get_registry(scope, window=None, tab=None):
     """Get the correct registry for a given scope."""
     if window is not None and scope not in ('window', 'tab'):
         raise TypeError("window is set with scope {}".format(scope))
-    if tab is not None and scope  != 'tab':
+    if tab is not None and scope != 'tab':
         raise TypeError("tab is set with scope {}".format(scope))
     if scope == 'global':
         return global_registry
@@ -229,4 +229,3 @@ def dump_objects():
         for line in data:
             lines.append("    {}".format(line))
     return lines
-