diff --git a/src/calibre/gui2/progress_indicator/__init__.py b/src/calibre/gui2/progress_indicator/__init__.py
index e57d221cc2..9452a8e3c1 100644
--- a/src/calibre/gui2/progress_indicator/__init__.py
+++ b/src/calibre/gui2/progress_indicator/__init__.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # License: GPLv3 Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>
 
-from qt.core import QDialog, QLabel, QObject, QSizePolicy, QStackedLayout, QStackedWidget, Qt, QVBoxLayout, QWidget, pyqtSignal
+from qt.core import QDialog, QLabel, QSizePolicy, QStackedLayout, QStackedWidget, Qt, QVBoxLayout, QWidget
 
 from calibre_extensions.progress_indicator import QProgressIndicator as ProgressIndicator
 from calibre_extensions.progress_indicator import SpinAnimator, draw_snake_spinner