diff --git a/index.bs b/index.bs
index 2c157713..e1637d0a 100644
--- a/index.bs
+++ b/index.bs
@@ -764,7 +764,7 @@ Note: |navigables| is a set because a [=shared worker=] can be associated
       1. Let |subscription top-level traversables| be [=get navigables by ids=] with |subscription|'s [=subscription/top-level traversable ids=].
 
       1. If the [=set/intersection=] of |top-level traversables| and
-          |subscription top-level traversables| is not [=list/empty=] return true.
+         |subscription top-level traversables| is not [=list/empty=] return true.
 
 1. Return false.