diff --git a/site/dev/tools/markdown.md b/site/dev/tools/markdown.md
index 59551a47e1..a9b2c93c44 100644
--- a/site/dev/tools/markdown.md
+++ b/site/dev/tools/markdown.md
@@ -22,7 +22,7 @@ corporate workstation. Run:
 
 And then **from within** the directory of your local Git checkout of Skia run:
 
-    docserver --preview
+    docserver --preview --local
 
 Then visit http://localhost:8000 to preview your changes. There is no need to
 restart the server for file changes, but you will need to restart it if there
@@ -32,7 +32,7 @@ to appear in the navigation on the right hand side of the page.
 If port 8000 is unavailable on your machine you can set the port to use via
 the --port flag:
 
-    docserver --preview --port=:8002
+    docserver --preview --local --port=:8002
 
 METADATA
 --------