diff --git a/.tx/config b/.tx/config
index 63d44f3205..da0bb1ca7d 100644
--- a/.tx/config
+++ b/.tx/config
@@ -14,7 +14,7 @@ source_lang = en
 type = KEYVALUEJSON
 file_filter = static/locale/<lang>/translations.json
 
-[zulip.messages]
+[zulip.mobile]
 source_file = static/locale/en/mobile.json
 source_lang = en
 type = KEYVALUEJSON