1 files changed, 1 insertions, 0 deletions
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index de81cb9663..9dd8d48386 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -67,6 +67,7 @@ class Codes(object):
     EXPIRED_ACCOUNT = "ORG_MATRIX_EXPIRED_ACCOUNT"
     INVALID_SIGNATURE = "M_INVALID_SIGNATURE"
     USER_DEACTIVATED = "M_USER_DEACTIVATED"
+    BAD_ALIAS = "M_BAD_ALIAS"
     PASSWORD_TOO_SHORT = "M_PASSWORD_TOO_SHORT"
     PASSWORD_NO_DIGIT = "M_PASSWORD_NO_DIGIT"
     PASSWORD_NO_UPPERCASE = "M_PASSWORD_NO_UPPERCASE"