diff --git a/docs/content/middlewares/ratelimit.md b/docs/content/middlewares/ratelimit.md
index ee39a8eb7..764a16555 100644
--- a/docs/content/middlewares/ratelimit.md
+++ b/docs/content/middlewares/ratelimit.md
@@ -184,7 +184,7 @@ labels:
 [http.middlewares]
   [http.middlewares.test-ratelimit.rateLimit]
     average = 6
-    period = 1m
+    period = "1m"
 ```
 
 ```yaml tab="File (YAML)"