diff --git a/src/calibre/gui2/lrf_renderer/bookview.py b/src/calibre/gui2/lrf_renderer/bookview.py
index 75da51d783..9c5b559ba3 100644
--- a/src/calibre/gui2/lrf_renderer/bookview.py
+++ b/src/calibre/gui2/lrf_renderer/bookview.py
@@ -8,8 +8,8 @@ class BookView(QGraphicsView):
 
     MINIMUM_SIZE = QSize(400, 500)
 
-    def __init__(self, *args):
-        QGraphicsView.__init__(self, *args)
+    def __init__(self, parent=None):
+        QGraphicsView.__init__(self, parent)
         self.preferred_size = self.MINIMUM_SIZE
 
     def minimumSizeHint(self):