diff --git a/calibre-plugin/plugin-defaults.ini b/calibre-plugin/plugin-defaults.ini
index 48203d7f..a2f9b60d 100644
--- a/calibre-plugin/plugin-defaults.ini
+++ b/calibre-plugin/plugin-defaults.ini
@@ -405,7 +405,7 @@ add_to_replace_metadata:
  title=>[-: ]*[\(\[]([^\]\)]+)[\)\]][-: ]*=>
 # remove 'Thread' and the next word, usually "Thread 2", "Thread
 # four", "Thread iv", etc
- title=>[-: ]*[Tt]hread [^ ]+[-: ]*=>
+ title,tagsfromtitle=>[-: ]*[Tt]hread [^ ]+[-: ]*=>
 
 add_to_extra_titlepage_entries:,tagsfromtitle
 
diff --git a/fanficfare/defaults.ini b/fanficfare/defaults.ini
index 2e75445c..89e6320a 100644
--- a/fanficfare/defaults.ini
+++ b/fanficfare/defaults.ini
@@ -402,7 +402,7 @@ add_to_replace_metadata:
  title=>[-: ]*[\(\[]([^\]\)]+)[\)\]][-: ]*=>
 # remove 'Thread' and the next word, usually "Thread 2", "Thread
 # four", "Thread iv", etc
- title=>[-: ]*[Tt]hread [^ ]+[-: ]*=>
+ title,tagsfromtitle=>[-: ]*[Tt]hread [^ ]+[-: ]*=>
 
 add_to_extra_titlepage_entries:,tagsfromtitle