diff --git a/src/calibre/ebooks/txt/input.py b/src/calibre/ebooks/txt/input.py
index e9a1b072a9..125d38ef25 100644
--- a/src/calibre/ebooks/txt/input.py
+++ b/src/calibre/ebooks/txt/input.py
@@ -6,7 +6,7 @@ __docformat__ = 'restructuredtext en'
 
 import os
 
-from calibre.customize.conversion import InputFormatPlugin
+from calibre.customize.conversion import InputFormatPlugin, OptionRecommendation
 from calibre.ebooks.txt.processor import txt_to_markdown
 
 class TXTInput(InputFormatPlugin):