diff --git a/src/calibre/gui2/image_popup.py b/src/calibre/gui2/image_popup.py
index cd43809f2d..f6c3c3be9d 100644
--- a/src/calibre/gui2/image_popup.py
+++ b/src/calibre/gui2/image_popup.py
@@ -412,5 +412,6 @@ def show_image(path=None):
     d()
     app.exec()
 
+
 if __name__ == '__main__':
     show_image()