diff --git a/traefik-kutt-timeout.example.yml b/traefik-kutt-timeout.example.yml
index 15e2e79..6f7c8b7 100644
--- a/traefik-kutt-timeout.example.yml
+++ b/traefik-kutt-timeout.example.yml
@@ -14,4 +14,4 @@ http:
     serversTransports:
         kutt-long-timeout:
             forwardingTimeouts:
-                responseHeaderTimeout: "300s"
+                responseHeaderTimeout: '300s'