diff --git a/src/cfnlint/match.py b/src/cfnlint/match.py
index 1916bd7335..57cce11747 100644
--- a/src/cfnlint/match.py
+++ b/src/cfnlint/match.py
@@ -7,6 +7,7 @@
 
 import hashlib
 import uuid
+from pathlib import Path
 from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
@@ -56,7 +57,8 @@ def __init__(
 
     def __repr__(self):
         """Represent"""
-        file_str = self.filename + ":" if self.filename else ""
+        # use the Posix path to keep things consistent across platforms
+        file_str = Path(self.filename).as_posix() + ":" if self.filename else ""
         return f"[{self.rule}] ({self.message}) matched {file_str}{self.linenumber}"
 
     def __eq__(self, item):
diff --git a/test/integration/test_good_templates.py b/test/integration/test_good_templates.py
index 6f2f496d6c..a0d68d848f 100644
--- a/test/integration/test_good_templates.py
+++ b/test/integration/test_good_templates.py
@@ -3,6 +3,7 @@
 SPDX-License-Identifier: MIT-0
 """
 
+from pathlib import Path
 from test.integration import BaseCliTestCase
 
 from cfnlint import ConfigMixIn
@@ -39,8 +40,10 @@ class TestQuickStartTemplates(BaseCliTestCase):
             ),
             "results": [
                 {
-                    "Filename": (
-                        "test/fixtures/templates/bad/transform_serverless_template.yaml"
+                    "Filename": str(
+                        Path(
+                            "test/fixtures/templates/bad/transform_serverless_template.yaml"
+                        )
                     ),
                     "Id": "74181426-e865-10eb-96fd-908dfd30a358",
                     "Location": {
@@ -70,8 +73,10 @@ class TestQuickStartTemplates(BaseCliTestCase):
                     ),
                 },
                 {
-                    "Filename": (
-                        "test/fixtures/templates/bad/transform_serverless_template.yaml"
+                    "Filename": str(
+                        Path(
+                            "test/fixtures/templates/bad/transform_serverless_template.yaml"
+                        )
                     ),
                     "Id": "fd751fa3-7d1f-e194-7108-eb08352814c8",
                     "Location": {
@@ -100,8 +105,10 @@ class TestQuickStartTemplates(BaseCliTestCase):
                     ),
                 },
                 {
-                    "Filename": (
-                        "test/fixtures/templates/bad/transform_serverless_template.yaml"
+                    "Filename": str(
+                        Path(
+                            "test/fixtures/templates/bad/transform_serverless_template.yaml"
+                        )
                     ),
                     "Id": "9e05773a-b0d0-f157-2955-596d9bd54749",
                     "Location": {
@@ -152,7 +159,11 @@ class TestQuickStartTemplates(BaseCliTestCase):
             "filename": "test/fixtures/templates/bad/resources_cognito_userpool_tag_is_list.yaml",
             "results": [
                 {
-                    "Filename": "test/fixtures/templates/bad/resources_cognito_userpool_tag_is_list.yaml",
+                    "Filename": str(
+                        Path(
+                            "test/fixtures/templates/bad/resources_cognito_userpool_tag_is_list.yaml"
+                        )
+                    ),
                     "Id": "3732b0a0-6d44-72af-860a-88e5f8ca790c",
                     "Level": "Error",
                     "Location": {
@@ -201,8 +212,10 @@ class TestQuickStartTemplates(BaseCliTestCase):
             ),
             "results": [
                 {
-                    "Filename": (
-                        "test/fixtures/templates/good/transform_serverless_globals.yaml"
+                    "Filename": str(
+                        Path(
+                            "test/fixtures/templates/good/transform_serverless_globals.yaml"
+                        )
                     ),
                     "Id": "fc9f2534-f4f8-092b-52d6-dafd2d429b67",
                     "Level": "Error",