1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/api/errors.py b/synapse/api/errors.py

index 109547b3ce..e8b9ee533d 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -39,6 +39,7 @@ class Codes(object):
     MISSING_PARAM = "M_MISSING_PARAM",
     TOO_LARGE = "M_TOO_LARGE",
     EXCLUSIVE = "M_EXCLUSIVE"
+    THREEPID_AUTH_FAILED = "M_THREEPID_AUTH_FAILED"
 
 
 class CodeMessageException(RuntimeError):