diff --git a/trl/scripts/chat.py b/trl/scripts/chat.py
index d1746441ea..2ede78e6cb 100644
--- a/trl/scripts/chat.py
+++ b/trl/scripts/chat.py
@@ -17,6 +17,7 @@
 import copy
 import json
 import os
+import platform
 import pwd
 import re
 import time
@@ -34,6 +35,9 @@
 from trl.trainer.utils import get_quantization_config
 
 
+if platform.system() != "Windows":
+    import pwd
+
 init_zero_verbose()
 
 HELP_STRING = """\
@@ -217,7 +221,10 @@ def print_help(self):
 
 
 def get_username():
-    return pwd.getpwuid(os.getuid())[0]
+    if platform.system() == "Windows":
+        return os.getlogin()
+    else:
+        return pwd.getpwuid(os.getuid()).pw_name
 
 
 def create_default_filename(model_name):