diff --git a/Dockerfile b/Dockerfile
index 52b50fe..160a4e0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -29,7 +29,7 @@ FROM python:3.14-slim AS runtime
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
     PATH="/app/.venv/bin:$PATH" \
-    PERSONAL_MCP_MOUNTS__DOCS_DIR=/app/docs
+    PERSONAL_MCP_SITE_DIR=/app/site
 
 WORKDIR /app