1 files changed, 1 insertions, 1 deletions
diff --git a/bin/sp b/bin/sp
index 11812367..8fe7472e 100755
--- a/bin/sp
+++ b/bin/sp
@@ -81,7 +81,7 @@ class ServiceProvider
   private
 
   def not_found
-    [404, {}, []]
+    [404, { 'X-Backend-Server' => 'SP' }, []]
   end
 
   def redirect_to(location)