diff --git a/index.bs b/index.bs
index b6a029f..90a69f7 100644
--- a/index.bs
+++ b/index.bs
@@ -8,7 +8,7 @@ URL: https://github.com/WICG/paymentlink
 Editor: Junhui He, Google https://google.com, junhuihe@google.com
 Abstract: This specification defines a mechanism for web pages to indicate the availability of push-based payment methods using the <{link}> element, enabling user agents to facilitate seamless payment experiences.
 Markup Shorthands: markdown yes, css no
-Complain About: accidental-2119 yes, missing-example-ids yes
+Complain About: accidental-2119 yes, missing-example-ids yes, mixed-indents no
 Assume Explicit For: yes
 WPT Path Prefix: payment-link
 WPT Display: closed