usethis-python
diff --git a/‎src/usethis/_tool/impl/spec/zensical.py‎
Lines changed: 1 addition & 10 deletions b/‎src/usethis/_tool/impl/spec/zensical.py‎
Lines changed: 1 addition & 10 deletions
diff --git a/‎tests/usethis/_core/test_core_tool.py‎
Lines changed: 7 additions & 6 deletions b/‎tests/usethis/_core/test_core_tool.py‎
Lines changed: 7 additions & 6 deletions
@@ -7,7 +7,7 @@
 
 from typing_extensions import override
 
-from usethis._config_file import MkDocsYMLManager, ZensicalTOMLManager
+from usethis._config_file import ZensicalTOMLManager
 from usethis._integrations.project.name import get_project_name
 from usethis._tool.base import ToolMeta, ToolSpec
 from usethis._tool.config import ConfigEntry, ConfigItem, ConfigSpec
@@ -46,7 +46,6 @@ def config_spec(self) -> ConfigSpec:
         return ConfigSpec.from_flat(
             file_managers=[
                 ZensicalTOMLManager(),
-                MkDocsYMLManager(),
             ],
             resolution="first_content",
             config_items=[
@@ -57,10 +56,6 @@ def config_spec(self) -> ConfigSpec:
                             keys=["project", "site_name"],
                             get_value=lambda: get_project_name(),
                         ),
-                        Path("mkdocs.yml"): ConfigEntry(
-                            keys=["site_name"],
-                            get_value=lambda: get_project_name(),
-                        ),
                     },
                 ),
                 ConfigItem(
@@ -70,10 +65,6 @@ def config_spec(self) -> ConfigSpec:
                             keys=["project", "nav"],
                             get_value=lambda: [{"Home": "index.md"}],
                         ),
-                        Path("mkdocs.yml"): ConfigEntry(
-                            keys=["nav"],
-                            get_value=lambda: [{"Home": "index.md"}],
-                        ),
                     },
                 ),
             ],
 
@@ -4237,9 +4237,9 @@ def test_how_to_use(
 """
             )
 
-    class TestMkDocsYMLFallback:
+    class TestMkDocsYMLPresent:
         @pytest.mark.usefixtures("_vary_network_conn")
-        def test_uses_mkdocs_yml_if_present(self, tmp_path: Path):
+        def test_writes_zensical_toml_even_if_mkdocs_yml_present(self, tmp_path: Path):
             # Arrange
             (tmp_path / "pyproject.toml").write_text("""\
 [project]
@@ -4251,7 +4251,8 @@ def test_uses_mkdocs_yml_if_present(self, tmp_path: Path):
             with change_cwd(tmp_path), files_manager():
                 use_zensical()
 
-            # Assert - config should stay in mkdocs.yml since it already has content
-            assert (tmp_path / "mkdocs.yml").exists()
-            contents = (tmp_path / "mkdocs.yml").read_text()
-            assert "site_name: existing-site" in contents
+            # Assert - config should be written to zensical.toml regardless of mkdocs.yml
+            assert (tmp_path / "zensical.toml").exists()
+            contents = (tmp_path / "zensical.toml").read_text()
+            assert "[project]" in contents
+            assert 'site_name = "my-project"' in contents