diff --git a/compiler/error/source/400_BAD_REQUEST.tsv b/compiler/error/source/400_BAD_REQUEST.tsv
index 8d3d9089..0e764456 100644
--- a/compiler/error/source/400_BAD_REQUEST.tsv
+++ b/compiler/error/source/400_BAD_REQUEST.tsv
@@ -29,4 +29,5 @@ USERNAME_NOT_OCCUPIED	The username is not occupied by anyone
 USERNAME_INVALID	The username is invalid
 MESSAGE_ID_INVALID	The message id is invalid
 MESSAGE_NOT_MODIFIED	The message was not modified
-ENTITY_MENTION_USER_INVALID	The mentioned entity is not an user
\ No newline at end of file
+ENTITY_MENTION_USER_INVALID	The mentioned entity is not an user
+MESSAGE_TOO_LONG	The message text is over 4096 characters
\ No newline at end of file