diff --git a/docs/sources/reference/commandline/cli.md b/docs/sources/reference/commandline/cli.md
index 8d4cdcbaaf..d167acc6e3 100644
--- a/docs/sources/reference/commandline/cli.md
+++ b/docs/sources/reference/commandline/cli.md
@@ -2198,6 +2198,8 @@ available in the default container, you can set these using the `--ulimit` flag.
 > If you do not provide a `hard limit`, the `soft limit` will be used for both
 values. If no `ulimits` are set, they will be inherited from the default `ulimits`
 set on the daemon.
+> `as` option is disabled for now. In other words, the following script is not supported:
+>   `$docker run -it --ulimit as=1024 fedora /bin/bash`
 
 ## save