diff --git a/docs/book/src/quick-start.md b/docs/book/src/quick-start.md
index 94a55ae2c..260d4d84f 100644
--- a/docs/book/src/quick-start.md
+++ b/docs/book/src/quick-start.md
@@ -122,9 +122,10 @@ if using user-assigned managed identity:
 
 ```bash
 export USER_ASSIGNED_IDENTITY_CLIENT_ID="$(az identity show --name "${USER_ASSIGNED_IDENTITY_NAME}" --resource-group "${RESOURCE_GROUP}" --query 'clientId' -otsv)"
+export USER_ASSIGNED_IDENTITY_OBJECT_ID="$(az identity show --name "${USER_ASSIGNED_IDENTITY_NAME}" --resource-group "${RESOURCE_GROUP}" --query 'principalId' -otsv)"
 az keyvault set-policy --name "${KEYVAULT_NAME}" \
   --secret-permissions get \
-  --spn "${USER_ASSIGNED_IDENTITY_CLIENT_ID}"
+  --object-id "${USER_ASSIGNED_IDENTITY_OBJECT_ID}"
 ```
 
 ## 5. Create a Kubernetes service account