diff --git a/deploy/files/sites-available/impress.conf b/deploy/files/sites-available/impress.conf
index 1085bf66..4234b2ad 100644
--- a/deploy/files/sites-available/impress.conf
+++ b/deploy/files/sites-available/impress.conf
@@ -34,7 +34,7 @@ server {
   }
 
   # On status 503, return the maintenance page.
-  error_page 503 maintenance.html;
+  error_page 503 /maintenance.html;
 
   # Try serving static files first. If not found, fall back to the app.
   try_files $uri/index.html $uri @app;