diff --git a/doc/ss-manager.asciidoc b/doc/ss-manager.asciidoc
index ba5e17fc..5c817e62 100644
--- a/doc/ss-manager.asciidoc
+++ b/doc/ss-manager.asciidoc
@@ -15,7 +15,7 @@ SYNOPSIS
  [-b <local_addr>] [-a <user_name>]
  [--manager-address <path_to_unix_domain>]
  [--executable <path_to_server_executable>]
- [--plugin <plugin_name>] [--plugin_opts <plugin_options]
+ [--plugin <plugin_name>] [--plugin_opts <plugin_options>]
 
 DESCRIPTION
 -----------