diff --git a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/manual.py b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/manual.py
index aae5232e4d9e2..0b88c246446c5 100644
--- a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/manual.py
+++ b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/manual.py
@@ -321,7 +321,7 @@ def _file_header(self, toc: TocEntry) -> str:
                      for style in self._html_params.stylesheets)),
             "".join((f'<script src="{html.escape(script, True)}" type="text/javascript"></script>'
                      for script in self._html_params.scripts)),
-            f'<script type="text/javascript">{self._redirects.get_client_redirects(toc.target.path)}</script>',
+            f'<script type="text/javascript">{self._redirects.get_redirect_script(toc.target.path)}</script>',
             f' <meta name="generator" content="{html.escape(self._html_params.generator, True)}" />',
             f' <link rel="home" href="{home.target.href()}" title="{home.target.title}" />' if home.target.href() else "",
             f' {up_link}{prev_link}{next_link}',
diff --git a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/redirects.py b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/redirects.py
index 1a45d9495acdb..5c35172fda97e 100644
--- a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/redirects.py
+++ b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/redirects.py
@@ -106,7 +106,10 @@ def get_client_redirects(self, redirection_target: str):
                 if path != redirection_target:
                     continue
                 client_redirects[anchor] = f"{locations[0]}#{identifier}"
+        return client_redirects
 
+    def get_redirect_script(self, redirection_target: str) -> str:
+        client_redirects = self.get_client_redirects(redirection_target)
         return self._redirects_script.replace('REDIRECTS_PLACEHOLDER', json.dumps(client_redirects))
 
 
diff --git a/pkgs/tools/nix/nixos-render-docs/src/tests/test_redirects.py b/pkgs/tools/nix/nixos-render-docs/src/tests/test_redirects.py
index 20aab596c33c1..4c7802f80a2dc 100644
--- a/pkgs/tools/nix/nixos-render-docs/src/tests/test_redirects.py
+++ b/pkgs/tools/nix/nixos-render-docs/src/tests/test_redirects.py
@@ -180,11 +180,8 @@ def test_client_path_with_server_redirect(self):
 class TestGetClientRedirects(unittest.TestCase):
     def test_no_client_redirects(self):
         """Test fetching client side redirects and ignore server-side ones."""
-        redirects = Redirects(
-            {"foo": ["index.html"], "bar": ["index.html", "foo.html"]},
-            "const redirects = REDIRECTS_PLACEHOLDER;",
-        )
-        self.assertEqual(redirects.get_client_redirects("index.html"), "const redirects = {};")
+        redirects = Redirects({"foo": ["index.html"], "bar": ["index.html", "foo.html"]}, "")
+        self.assertEqual(redirects.get_client_redirects("index.html"), {})
 
     def test_basic_redirect_matching(self):
         redirects = Redirects(
@@ -192,13 +189,12 @@ def test_basic_redirect_matching(self):
                 'foo': ['index.html', 'index.html#some-section', 'index.html#another-section'],
                 'bar': ['index.html'],
             },
-            "const redirects = REDIRECTS_PLACEHOLDER;",
+            "",
         )
 
-        result = redirects.get_client_redirects("index.html")
+        client_redirects = redirects.get_client_redirects("index.html")
         expected_redirects = {'some-section': 'index.html#foo', 'another-section': 'index.html#foo'}
-        expected_script = f"const redirects = {json.dumps(expected_redirects)};"
-        self.assertEqual(result, expected_script)
+        self.assertEqual(client_redirects, expected_redirects)
 
     def test_advanced_redirect_matching(self):
         redirects = Redirects(
@@ -206,16 +202,14 @@ def test_advanced_redirect_matching(self):
                 'foo': ['foo.html', 'foo.html#some-section', 'bar.html#foo'],
                 'bar': ['bar.html', 'bar.html#another-section'],
             },
-            "const redirects = REDIRECTS_PLACEHOLDER;",
+            "",
         )
-        self.assertEqual(redirects.get_client_redirects("index.html"), "const redirects = {};")
+        self.assertEqual(redirects.get_client_redirects("index.html"), {})
 
-        result = redirects.get_client_redirects("foo.html")
+        client_redirects = redirects.get_client_redirects("foo.html")
         expected_redirects = {'some-section': 'foo.html#foo'}
-        expected_script = f"const redirects = {json.dumps(expected_redirects)};"
-        self.assertEqual(result, expected_script)
+        self.assertEqual(client_redirects, expected_redirects)
 
-        result = redirects.get_client_redirects("bar.html")
+        client_redirects = redirects.get_client_redirects("bar.html")
         expected_redirects = {'foo': 'foo.html#foo', 'another-section': 'bar.html#bar'}
-        expected_script = f"const redirects = {json.dumps(expected_redirects)};"
-        self.assertEqual(result, expected_script)
+        self.assertEqual(client_redirects, expected_redirects)