diff --git a/sphinx/README.md b/sphinx/README.md
index 4bcd44e..fabcfee 100644
--- a/sphinx/README.md
+++ b/sphinx/README.md
@@ -16,7 +16,7 @@ Add to Gitea app.ini.
     [markup.restructuredtext]
     ENABLED = true
     FILE_EXTENSIONS = .rst
-    RENDER_COMMAND = timeout 30s sudo -u sphinx ./custom/sphinx/venv/bin/python3 ./custom/sphinx/sphinx_to_html.py
+    RENDER_COMMAND = timeout 30s sudo --preserve-env=GITEA_PREFIX_SRC -u sphinx ./custom/sphinx/venv/bin/python3 ./custom/sphinx/sphinx_to_html.py
 
     [markup.sanitizer.restructuredtext]
     ELEMENT = div
diff --git a/sphinx/sphinx_to_html.py b/sphinx/sphinx_to_html.py
index 8e0f981..f293a7e 100755
--- a/sphinx/sphinx_to_html.py
+++ b/sphinx/sphinx_to_html.py
@@ -13,6 +13,7 @@ import tempfile
 page_contents = sys.stdin.read()
 
 base_url = "https://projects.blender.org"
+uatest_base_url = "https://uatest.projects.blender.org"
 local_url = "http://localhost:3000"
 placeholder_url = "https://placeholder.org"
 
@@ -20,6 +21,8 @@ placeholder_url = "https://placeholder.org"
 gitea_prefix = os.environ.get("GITEA_PREFIX_SRC", "")
 if gitea_prefix.startswith(base_url):
     gitea_prefix = gitea_prefix[len(base_url):]
+if gitea_prefix.startswith(uatest_base_url):
+    gitea_prefix = gitea_prefix[len(uatest_base_url):]
 if gitea_prefix.startswith(local_url):
     gitea_prefix = gitea_prefix[len(local_url):]