diff --git a/docs/configuration/loadbalancing/haproxy.rst b/docs/configuration/loadbalancing/haproxy.rst
index e62740ce..667ebb95 100644
--- a/docs/configuration/loadbalancing/haproxy.rst
+++ b/docs/configuration/loadbalancing/haproxy.rst
@@ -157,6 +157,12 @@ Backend
 
   Active health check backend server
 
+.. cfgcmd:: set load-balancing haproxy backend <name> server
+   <name> check port <port>
+
+  Set an alternative port number for health checks.
+  Overrides the default server port used for TCP/HTTP checks.
+
 .. cfgcmd:: set load-balancing haproxy backend <name> server
    <name> send-proxy
 
@@ -494,5 +500,5 @@ This configuration enables HTTP health checks on backend servers.
     set load-balancing haproxy backend bk-01 server srv01 check
     set load-balancing haproxy backend bk-01 server srv02 address '192.0.2.12'
     set load-balancing haproxy backend bk-01 server srv02 port '8882'
-    set load-balancing haproxy backend bk-01 server srv02 check
+    set load-balancing haproxy backend bk-01 server srv02 check port '8892'