diff --git a/index.bs b/index.bs
index b322eb3a..ad1d0349 100644
--- a/index.bs
+++ b/index.bs
@@ -3177,7 +3177,7 @@ Maintenance Without a Group</h4>
 	[=Team corrections=] do not constitute
 	a normative portion of the Recommendation,
 	as defined in the Patent Policy [[PATENT-POLICY]]
-	(i.e. they are not covered by the Patent Policy).
+	(i.e., they are not covered by the Patent Policy).
 	For [=Candidate Recommendations=],
 	[=Proposed Recommendations=],
 	[=W3C Recommendations=],