diff --git a/src/calibre/gui2/dialogs/progress.py b/src/calibre/gui2/dialogs/progress.py
index 8bdeb65da3..553ee4b03b 100644
--- a/src/calibre/gui2/dialogs/progress.py
+++ b/src/calibre/gui2/dialogs/progress.py
@@ -94,11 +94,9 @@ class BlockingBusy(QDialog):
 
     def start(self):
         self.pi.startAnimation()
-        pass
 
     def stop(self):
         self.pi.stopAnimation()
-        pass
 
     def accept(self):
         self.stop()