diff --git a/src/sphinx_book_theme/header_buttons/launch.py b/src/sphinx_book_theme/header_buttons/launch.py
index 08ef14cb..f3cd3b00 100644
--- a/src/sphinx_book_theme/header_buttons/launch.py
+++ b/src/sphinx_book_theme/header_buttons/launch.py
@@ -195,7 +195,7 @@ def add_launch_buttons(
             SPHINX_LOGGER.warning(f"Provider {provider} not supported on Lightning.")
         else:
             github_path = f"%2F{org}%2F{repo}%2Fblob%2F{branch}%2F{path_rel_repo}"
-            url = f"{lightning_studio_url}/new?repo_url=https://github.com{github_path}"
+            url = f"{lightning_studio_url}/new?repo_url=https%3A%2F%2Fgithub.com{github_path}"
             launch_buttons_list.append(
                 {
                     "type": "link",