diff --git a/docs/user-guide/nginx-configuration/annotations.md b/docs/user-guide/nginx-configuration/annotations.md
index 8d0c4c752..1e089017e 100755
--- a/docs/user-guide/nginx-configuration/annotations.md
+++ b/docs/user-guide/nginx-configuration/annotations.md
@@ -451,8 +451,8 @@ These annotations define limits on connections and transmission rates.  These ca
 * `nginx.ingress.kubernetes.io/limit-connections`: number of concurrent connections allowed from a single IP address. A 503 error is returned when exceeding this limit.
 * `nginx.ingress.kubernetes.io/limit-rps`: number of requests accepted from a given IP each second. The burst limit is set to 5 times the limit. When clients exceed this limit,  [limit-req-status-code](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#limit-req-status-code) ***default:*** 503 is returned.
 * `nginx.ingress.kubernetes.io/limit-rpm`: number of requests accepted from a given IP each minute. The burst limit is set to 5 times the limit. When clients exceed this limit,  [limit-req-status-code](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#limit-req-status-code) ***default:*** 503 is returned.
-* `nginx.ingress.kubernetes.io/limit-rate-after`: initial number of kilobytes after which the further transmission of a response to a given connection will be rate limited.
-* `nginx.ingress.kubernetes.io/limit-rate`: number of kilobytes per second allowed to send to a given connection.  The zero value disables rate limiting.
+* `nginx.ingress.kubernetes.io/limit-rate-after`: initial number of kilobytes after which the further transmission of a response to a given connection will be rate limited. This feature must be used with proxy-buffering enabled.
+* `nginx.ingress.kubernetes.io/limit-rate`: number of kilobytes per second allowed to send to a given connection.  The zero value disables rate limiting. This feature must be used with proxy-buffering enabled.
 * `nginx.ingress.kubernetes.io/limit-whitelist`: client IP source ranges to be excluded from rate-limiting. The value is a comma separated list of CIDRs.
 
 If you specify multiple annotations in a single Ingress rule, limits are applied in the order `limit-connections`, `limit-rpm`, `limit-rps`.