1 files changed, 1 insertions, 3 deletions
diff --git a/synapse/appservice/__init__.py b/synapse/appservice/__init__.py
index 1b13e84425..0323256472 100644
--- a/synapse/appservice/__init__.py
+++ b/synapse/appservice/__init__.py
@@ -15,8 +15,6 @@
 import logging
 import re
 
-from six import string_types
-
 from twisted.internet import defer
 
 from synapse.api.constants import EventTypes
@@ -156,7 +154,7 @@ class ApplicationService(object):
                         )
 
                 regex = regex_obj.get("regex")
-                if isinstance(regex, string_types):
+                if isinstance(regex, str):
                     regex_obj["regex"] = re.compile(regex)  # Pre-compile regex
                 else:
                     raise ValueError("Expected string for 'regex' in ns '%s'" % ns)