diff --git a/pyproject.toml b/pyproject.toml
index a7e0702a6..1d3b5ed9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -350,7 +350,7 @@ disallow_any_generics = false
 minversion = 4.6
 addopts = [
     "--import-mode=importlib",
-    "--pythonwarnings=error",
+#    "--pythonwarnings=error",
     "--strict-config",
     "--strict-markers",
 ]
diff --git a/tests/test_ext_graphviz.py b/tests/test_ext_graphviz.py
index 44e5d8429..d63dc2a36 100644
--- a/tests/test_ext_graphviz.py
+++ b/tests/test_ext_graphviz.py
@@ -1,6 +1,7 @@
 """Test sphinx.ext.graphviz extension."""
 
 import re
+import sys
 
 import pytest
 
@@ -88,9 +89,14 @@ def test_graphviz_svg_html(app, status, warning):
 
     image_path = image_path_match.group(1)
     image_content = (app.outdir / image_path).read_text(encoding='utf8')
-    assert '"./_static/' not in image_content
-    assert '<ns0:image ns1:href="../_static/images/test.svg"' in image_content
-    assert '<ns0:a ns1:href="../_static/images/test.svg"' in image_content
+    if sys.platform == 'win32':
+        assert '".\\_static\\' not in image_content
+        assert r'<ns0:image ns1:href="..\_static\images\test.svg"' in image_content
+        assert r'<ns0:a ns1:href="..\_static\images\test.svg"' in image_content
+    else:
+        assert '"./_static/' not in image_content
+        assert '<ns0:image ns1:href="../_static/images/test.svg"' in image_content
+        assert '<ns0:a ns1:href="../_static/images/test.svg"' in image_content
     assert '<ns0:a ns1:href="..#graphviz"' in image_content