diff --git a/aiohttp_devtools/logs.py b/aiohttp_devtools/logs.py
index 7fdbf24f..3483b873 100644
--- a/aiohttp_devtools/logs.py
+++ b/aiohttp_devtools/logs.py
@@ -1,6 +1,7 @@
 import json
 import logging
 import logging.config
+import platform
 import re
 import traceback
 from io import StringIO
@@ -30,7 +31,7 @@
 class HighlightStreamHandler(logging.StreamHandler):
     def setFormatter(self, fmt):
         self.formatter = fmt
-        self.formatter.stream_is_tty = isatty(self.stream)
+        self.formatter.stream_is_tty = isatty(self.stream) and platform.system().lower() != 'windows'
 
 
 class DefaultFormatter(logging.Formatter):