diff --git a/doc/server_plugin.md b/doc/server_plugin.md
index 9506fa7b..d73d2439 100644
--- a/doc/server_plugin.md
+++ b/doc/server_plugin.md
@@ -138,7 +138,10 @@ Create new proxy
 
 #### CloseProxy
 
-A previously created proxy is closed
+A previously created proxy is closed.
+
+Please note that one request will be sent for every proxy that is closed, do **NOT** use this
+if you have too many proxies bound to a single client, as this may exhaust the server's resources.
 
 ```
 {