diff --git a/src/docs/markdown/caddyfile/directives/reverse_proxy.md b/src/docs/markdown/caddyfile/directives/reverse_proxy.md
index ea22e41..371d89e 100644
--- a/src/docs/markdown/caddyfile/directives/reverse_proxy.md
+++ b/src/docs/markdown/caddyfile/directives/reverse_proxy.md
@@ -168,7 +168,7 @@ Active health checks perform health checking in the background on a timer:
 Passive health checks happen inline with actual proxied requests:
 
 - **fail_duration** <span id="fail_duration"/>  is a [duration value](/docs/conventions#durations) that defines how long to remember a failed request. A duration > 0 enables passive health checking.
-- **max_fails** <span id="max_fails"/> is the maximum number of failed requests within fail_timeout that are needed before considering a backend to be down; must be >= 1; default is 1.
+- **max_fails** <span id="max_fails"/> is the maximum number of failed requests within `fail_duration` that are needed before considering a backend to be down; must be >= 1; default is 1.
 - **unhealthy_status** <span id="unhealthy_status"/> counts a request as failed if the response comes back with one of these status codes. Can be a 3-digit status code or a status code class ending in `xx`, for example: `404` or `5xx`.
 - **unhealthy_latency** <span id="unhealthy_latency"/> is a [duration value](/docs/conventions#durations) that counts a request as failed if it takes this long to get a response.
 - **unhealthy_request_count** <span id="unhealthy_request_count"/> is the permissible number of simultaneous requests to a backend before marking it as down.