diff --git a/aider/linter.py b/aider/linter.py
index 920a8b7c6..51ed40b70 100644
--- a/aider/linter.py
+++ b/aider/linter.py
@@ -4,7 +4,7 @@ import subprocess
 import sys
 import traceback
 import warnings
-import shlex
+import oslex
 from dataclasses import dataclass
 from pathlib import Path
 
@@ -45,7 +45,7 @@ class Linter:
             return fname
 
     def run_cmd(self, cmd, rel_fname, code):
-        cmd += " " + shlex.quote(rel_fname)
+        cmd += " " + oslex.quote(rel_fname)
 
         returncode = 0
         stdout = ""
diff --git a/aider/utils.py b/aider/utils.py
index c6773f140..8ab8184a3 100644
--- a/aider/utils.py
+++ b/aider/utils.py
@@ -1,7 +1,7 @@
 import itertools
 import os
 import platform
-import shlex
+import oslex
 import subprocess
 import sys
 import tempfile
@@ -384,10 +384,7 @@ def printable_shell_command(cmd_list):
     Returns:
         str: Shell-escaped command string.
     """
-    if platform.system() == "Windows":
-        return subprocess.list2cmdline(cmd_list)
-    else:
-        return shlex.join(cmd_list)
+    return oslex.join(cmd_list)
 
 
 def main():
diff --git a/requirements.txt b/requirements.txt
index 44dbe2956..62832718b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -184,6 +184,8 @@ monotonic==1.6
     # via
     #   -c requirements/common-constraints.txt
     #   posthog
+mslex==1.3.0
+    # via oslex
 multidict==6.4.3
     # via
     #   -c requirements/common-constraints.txt
@@ -202,6 +204,8 @@ openai==1.73.0
     # via
     #   -c requirements/common-constraints.txt
     #   litellm
+oslex==0.1.3
+    # via -r requirements/requirements.in
 packaging==24.2
     # via
     #   -c requirements/common-constraints.txt
@@ -423,6 +427,6 @@ zipp==3.21.0
     # via
     #   -c requirements/common-constraints.txt
     #   importlib-metadata
-    
+
 tree-sitter==0.23.2; python_version < "3.10"
 tree-sitter==0.24.0; python_version >= "3.10"
diff --git a/requirements/requirements.in b/requirements/requirements.in
index 101f16988..5d75f3fa7 100644
--- a/requirements/requirements.in
+++ b/requirements/requirements.in
@@ -28,6 +28,7 @@ watchfiles
 socksio
 pip
 pillow
+oslex
 
 # The proper dependency is networkx[default], but this brings
 # in matplotlib and a bunch of other deps
diff --git a/tests/basic/test_linter.py b/tests/basic/test_linter.py
index ace4a9311..60132b565 100644
--- a/tests/basic/test_linter.py
+++ b/tests/basic/test_linter.py
@@ -43,7 +43,7 @@ class TestLinter(unittest.TestCase):
         from pathlib import Path
         root = Path(__file__).parent.parent.parent.absolute().as_posix()
         linter = Linter(encoding="utf-8", root=root)
-        result = linter.run_cmd("dir", "tests/basic", "code")
+        result = linter.run_cmd("dir", "tests\\basic", "code")
         self.assertIsNone(result)
 
     @patch("subprocess.Popen")