diff --git a/compiler/error/source/400_BAD_REQUEST.tsv b/compiler/error/source/400_BAD_REQUEST.tsv
index 0b9804a7..a2bbd345 100644
--- a/compiler/error/source/400_BAD_REQUEST.tsv
+++ b/compiler/error/source/400_BAD_REQUEST.tsv
@@ -92,4 +92,5 @@ USERNAME_NOT_MODIFIED	The username was not modified
 CALL_ALREADY_ACCEPTED	The call is already accepted
 CALL_ALREADY_DECLINED	The call is already declined
 PHOTO_EXT_INVALID	The photo extension is invalid
-EXTERNAL_URL_INVALID	The external media URL is invalid
\ No newline at end of file
+EXTERNAL_URL_INVALID	The external media URL is invalid
+CHAT_NOT_MODIFIED	The chat settings were not modified
\ No newline at end of file