diff --git a/html/languages/translations/en.po b/html/languages/translations/en.po
index 0008fa8c3a..0cabcceeed 100644
--- a/html/languages/translations/en.po
+++ b/html/languages/translations/en.po
@@ -223,6 +223,9 @@ msgstr ""
 msgid "Topic"
 msgstr ""
 
+msgid "Thread"
+msgstr ""
+
 msgid "Threads"
 msgstr ""