diff --git a/packages/react-scripts/scripts/get-schema.js b/packages/react-scripts/scripts/get-schema.js
index ca2a1846c02..f2fcd34621d 100644
--- a/packages/react-scripts/scripts/get-schema.js
+++ b/packages/react-scripts/scripts/get-schema.js
@@ -15,9 +15,9 @@ function isURL(str) {
   return str.length < 2083 && url.test(str)
 }
 
-const url = process.argv[2]
+const url = process.argv[3]
 
-const saveJson = process.argv[3] === 'json'
+const saveJson = process.argv[4] === 'json'
 
 if (!url) {
   console.log("Usage: get-schema " + chalk.green("url"))