diff --git a/qutebrowser/mainwindow/tabwidget.py b/qutebrowser/mainwindow/tabwidget.py
index a68fc0864..037231a82 100644
--- a/qutebrowser/mainwindow/tabwidget.py
+++ b/qutebrowser/mainwindow/tabwidget.py
@@ -21,7 +21,6 @@
 
 import collections
 import functools
-import math
 
 from PyQt5.QtCore import pyqtSignal, pyqtSlot, Qt, QSize, QRect, QTimer
 from PyQt5.QtWidgets import (QTabWidget, QTabBar, QSizePolicy, QCommonStyle,
@@ -312,7 +311,6 @@ class TabBar(QTabBar):
         size = self.fontMetrics().height() - 2
         self.setIconSize(QSize(size, size))
 
-
     @config.change_filter('colors', 'tabs.bg.bar')
     def set_colors(self):
         """Set the tab bar colors."""