diff --git a/support/mkdocs b/support/mkdocs
index 94eddae3..e595a2be 100755
--- a/support/mkdocs
+++ b/support/mkdocs
@@ -71,15 +71,18 @@ if len(args) > 0:
     # mike stages files added by deploy for deletion for unclear reason,
     # undo it.
     ret = call(['git', 'reset', '--hard'], cwd=site_dir)
-    if False:
-      os.makedirs(current_doc_path, exist_ok=True)
-      redirect_page_path = os.path.join(current_doc_path, 'api.html')
-      with open(redirect_page_path, "w") as file:
-        file.write(redirect_page)
-      ret = call(['git', 'add', redirect_page_path], cwd=site_dir)
-      if ret != 0:
-        sys.exit(ret)
-      ret = call(['git', 'commit', '--amend', '--no-edit'], cwd=site_dir)
+    if ret != 0:
+      sys.exit(ret)
+    # Generate a redirect page from the old Sphinx api.html to the new api/
+    # page, preserving the URL hash so links such as api.html#udt keep working.
+    os.makedirs(current_doc_path, exist_ok=True)
+    redirect_page_path = os.path.join(current_doc_path, 'api.html')
+    with open(redirect_page_path, "w") as file:
+      file.write(redirect_page)
+    ret = call(['git', 'add', redirect_page_path], cwd=site_dir)
+    if ret != 0:
+      sys.exit(ret)
+    ret = call(['git', 'commit', '--amend', '--no-edit'], cwd=site_dir)
     sys.exit(ret)
   elif not command.startswith('-'):
     args += ['-f', config_path]