diff --git a/qutebrowser/config/config.py b/qutebrowser/config/config.py
index d98119ea5..49226ac36 100644
--- a/qutebrowser/config/config.py
+++ b/qutebrowser/config/config.py
@@ -182,9 +182,10 @@ class Config:
         else:
             if raw:
                 return val.value
-            newval = self._interpolation.before_get(
-                self, section, option, val.value,
-                {key: val.value for key, val in self.config[section].values.items()})
+            mapping = {key: val.value
+                       for key, val in self.config[section].values.items()}
+            newval = self._interpolation.before_get(self, section, option,
+                                                    val.value, mapping)
             logging.debug("interpolated val: {}".format(newval))
             newval = val.typ.transform(newval)
             return newval
@@ -254,8 +255,11 @@ class ReadWriteConfigParser(ReadConfigParser):
 
 
 class SectionProxy(configparser.SectionProxy):
+
     """A proxy for a single section from a parser."""
 
+    # pylint: disable=redefined-builtin
+
     def __getitem__(self, key):
         return self._parser.get(self._name, key)
 
diff --git a/qutebrowser/widgets/completion.py b/qutebrowser/widgets/completion.py
index f45971adc..22263156b 100644
--- a/qutebrowser/widgets/completion.py
+++ b/qutebrowser/widgets/completion.py
@@ -184,7 +184,7 @@ class CompletionView(QTreeView):
             model: An index into self._completion_models.
 
         """
-        self._lastmidel = self._model
+        self._lastmodel = self._model
         m = self._completion_models[model]
         logging.debug("Setting model to {}".format(m))
         self.setModel(m)