diff --git a/qutebrowser/commands/command.py b/qutebrowser/commands/command.py
index 96fa2aabb..d9a5d9057 100644
--- a/qutebrowser/commands/command.py
+++ b/qutebrowser/commands/command.py
@@ -65,7 +65,6 @@ class Command:
     SpecialParams = collections.namedtuple('SpecialParams',
                                            ['count', 'win_id'])
 
-
     def __init__(self, name, split, hide, instance, completion, modes,
                  not_modes, needs_js, is_debug, ignore_args,
                  handler, scope):
diff --git a/qutebrowser/utils/utilcmds.py b/qutebrowser/utils/utilcmds.py
index 575a892d7..9bc7b9054 100644
--- a/qutebrowser/utils/utilcmds.py
+++ b/qutebrowser/utils/utilcmds.py
@@ -113,8 +113,8 @@ def debug_cache_stats():
 def debug_console():
     """Show the debugging console."""
     try:
-        debug_console = objreg.get('debug-console')
+        con_widget = objreg.get('debug-console')
     except KeyError:
-        debug_console = console.ConsoleWidget()
-        objreg.register('debug-console', debug_console)
-    debug_console.show()
+        con_widget = console.ConsoleWidget()
+        objreg.register('debug-console', con_widget)
+    con_widget.show()
diff --git a/qutebrowser/widgets/console.py b/qutebrowser/widgets/console.py
index e55fec0c7..f004cd188 100644
--- a/qutebrowser/widgets/console.py
+++ b/qutebrowser/widgets/console.py
@@ -75,10 +75,11 @@ class ConsoleLineEdit(misc.CommandLineEdit):
 
     @pyqtSlot(str)
     def on_text_changed(self, text):
+        """Update completion when text changed."""
         strings = set()
         i = 0
         while True:
-            s = self._rlcompleter.complete(self.text(), i)
+            s = self._rlcompleter.complete(text, i)
             if s is None:
                 break
             else:
@@ -216,6 +217,7 @@ class ConsoleWidget(QWidget):
         return utils.get_repr(self, visible=self.isVisible())
 
     def write(self, line):
+        """Write a line of text (without added newline) to the output."""
         self._output.append_text(line)
 
     @pyqtSlot(str)