1 files changed, 1 insertions, 3 deletions
diff --git a/synapse/server_notices/consent_server_notices.py b/synapse/server_notices/consent_server_notices.py
index e7e8b8e688..3bfc8d7278 100644
--- a/synapse/server_notices/consent_server_notices.py
+++ b/synapse/server_notices/consent_server_notices.py
@@ -14,8 +14,6 @@
 # limitations under the License.
 import logging
 
-from six import string_types
-
 from synapse.api.errors import SynapseError
 from synapse.api.urls import ConsentURIBuilder
 from synapse.config import ConfigError
@@ -118,7 +116,7 @@ def copy_with_str_subst(x, substitutions):
     Returns:
         copy of x
     """
-    if isinstance(x, string_types):
+    if isinstance(x, str):
         return x % substitutions
     if isinstance(x, dict):
         return {k: copy_with_str_subst(v, substitutions) for (k, v) in x.items()}