Merge commit '8ca120df7' into anoa/dinsic_release_1_23_1

1 files changed, 3 insertions, 3 deletions

diff --git a/synapse/types.py b/synapse/types.py

index 5e52c1eb12..7c9f716804 100644
--- a/synapse/types.py
+++ b/synapse/types.py
@@ -318,14 +318,14 @@ mxid_localpart_allowed_characters = set(
 )
 
 
-def contains_invalid_mxid_characters(localpart):
+def contains_invalid_mxid_characters(localpart: str) -> bool:
     """Check for characters not allowed in an mxid or groupid localpart
 
     Args:
-        localpart (basestring): the localpart to be checked
+        localpart: the localpart to be checked
 
     Returns:
-        bool: True if there are any naughty characters
+        True if there are any naughty characters
     """
     return any(c not in mxid_localpart_allowed_characters for c in localpart)