diff --git a/.woodpecker.yml b/.woodpecker.yml
index b1b9d0c..e2bb8ad 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -5,7 +5,9 @@ pipeline:
     environment:
       - SITE_URL=https://tinternet.gitnet.page/doc/
     commands: |
-      sed -i "s,# site_url: \"{site_url}\",site_url: \"$SITE_URL\"," mkdocs.yml
+      if [ test -n -n "$SITE_URL" ]; then
+        sed -i "s,# site_url: \"{site_url}\",site_url: \"$SITE_URL\"," mkdocs.yml 
+      fi
       cat mkdocs.yml
       mkdocs build
       git checkout mkdocs.yml