diff --git a/qutebrowser/mainwindow/tabbedbrowser.py b/qutebrowser/mainwindow/tabbedbrowser.py
index 5c0cd16f8..df0048516 100644
--- a/qutebrowser/mainwindow/tabbedbrowser.py
+++ b/qutebrowser/mainwindow/tabbedbrowser.py
@@ -449,13 +449,7 @@ class TabbedBrowser(tabwidget.TabWidget):
             # Make sure the background tab has the correct initial size.
             # With a foreground tab, it's going to be resized correctly by the
             # layout anyways.
-            if self.tabBar().vertical:
-                tab_size = QSize(self.width() - self.tabBar().width(),
-                                 self.height())
-            else:
-                tab_size = QSize(self.width(),
-                                 self.height() - self.tabBar().height())
-            tab.resize(tab_size)
+            tab.resize(self.currentWidget().size())
             self.tab_index_changed.emit(self.currentIndex(), self.count())
         else:
             self.setCurrentWidget(tab)