diff --git a/README.md b/README.md
index 615c032f3..b5e8d5ce5 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,7 @@ The value of input parameter `creds` is a string in json format, including the f
     "clientSecret":  "******",
     "subscriptionId":  "******",
     "tenantId":  "******",
-    "clientId":  "******"
+    "servicePrincipalId":  "******"
 }
 ```