diff --git a/docs/config.go b/docs/config.go
index edae558e..b49bd910 100644
--- a/docs/config.go
+++ b/docs/config.go
@@ -57,7 +57,7 @@ func (options *Options) InstallFlags(cmd *flag.FlagSet, usageFn func(string) str
 	cmd.Var(&options.Mirrors, []string{"-registry-mirror"}, usageFn("Preferred Docker registry mirror"))
 	options.InsecureRegistries = opts.NewListOpts(ValidateIndexName)
 	cmd.Var(&options.InsecureRegistries, []string{"-insecure-registry"}, usageFn("Enable insecure registry communication"))
-	cmd.BoolVar(&V2Only, []string{"-no-legacy-registry"}, false, "Do not contact legacy registries")
+	cmd.BoolVar(&V2Only, []string{"-disable-legacy-registry"}, false, "Do not contact legacy registries")
 }
 
 type netIPNet net.IPNet