diff --git a/tfw/logging.py b/tfw/logging.py
index dad7499..f05958e 100644
--- a/tfw/logging.py
+++ b/tfw/logging.py
@@ -2,6 +2,7 @@
 from datetime import datetime
 from typing import TextIO, Union
 from dataclasses import dataclass
+from collections.abc import Mapping
 from traceback import format_exception
 from logging import DEBUG, getLogger, Handler, Formatter, Filter
 
@@ -81,7 +82,7 @@ class LogFormatter(Formatter):
     def format(self, record):
         time = datetime.utcfromtimestamp(record.created).strftime('%H:%M:%S')
         if record.args:
-            tuple_args = (record.args,) if isinstance(record.args, dict) else record.args
+            tuple_args = (record.args,) if isinstance(record.args, Mapping) else record.args
             clean_args = tuple((self.trim(arg) for arg in tuple_args))
             message = record.msg % clean_args
         else: