diff --git a/src/calibre/library/catalog.py b/src/calibre/library/catalog.py
index 7b6f6f92c1..dc474b2a6f 100644
--- a/src/calibre/library/catalog.py
+++ b/src/calibre/library/catalog.py
@@ -3534,7 +3534,6 @@ class EPUB_MOBI(CatalogPlugin):
                             opts.basename + '.opf'), path_to_output, log, report_progress=notification,
                             abort_after_input_dump=False)
             plumber.merge_ui_recommendations(recommendations)
-
             plumber.run()
             return 0
         else: