diff --git a/src/calibre/customize/profiles.py b/src/calibre/customize/profiles.py
index b9a159ee7d..97b84f1286 100644
--- a/src/calibre/customize/profiles.py
+++ b/src/calibre/customize/profiles.py
@@ -555,11 +555,9 @@ class KindleOutput(OutputProfile):
     periodical_date_in_title = False
 
     @classmethod
-#     def tags_to_string(cls, tags):
-#         return u'%s <br/><span style="color: white">%s</span>' % (', '.join(tags),
-#                 'ttt '.join(tags)+'ttt ')
     def tags_to_string(cls, tags):
-        return u'%s' % (', '.join(tags))
+        return u'%s <br/><span style="color:white">%s</span>' % (', '.join(tags),
+                'ttt '.join(tags)+'ttt ')
 
 class KindleDXOutput(OutputProfile):