diff --git a/mypy/checkmember.py b/mypy/checkmember.py
index defca1dc2823..8f99f96e2dd5 100644
--- a/mypy/checkmember.py
+++ b/mypy/checkmember.py
@@ -12,7 +12,6 @@
     freshen_all_functions_type_vars,
 )
 from mypy.maptype import map_instance_to_supertype
-from mypy import errorcodes as codes
 from mypy.messages import MessageBuilder
 from mypy.nodes import (
     ARG_POS,
diff --git a/mypy/messages.py b/mypy/messages.py
index cc10452fe417..79719149eb06 100644
--- a/mypy/messages.py
+++ b/mypy/messages.py
@@ -932,7 +932,7 @@ def readonly_keys_mutated(self, keys: set[str], context: Context) -> None:
         else:
             suffix = "are"
         self.fail(
-            "ReadOnly {} TypedDict {} mutated".format(format_key_list(list(sorted(keys))), suffix),
+            "ReadOnly {} TypedDict {} mutated".format(format_key_list(sorted(keys)), suffix),
             code=codes.TYPEDDICT_READONLY_MUTATED,
             context=context,
         )