diff --git a/index.bs b/index.bs
index 16966ed..bbd5223 100644
--- a/index.bs
+++ b/index.bs
@@ -142,7 +142,7 @@ Sec-Fetch-Dest: worker
 // Top-level navigations' destinations are "document"
 Sec-Fetch-Dest: document
 
-// `<iframe>` navigations' destinations are "document"
+// `<iframe>` navigations' destinations are "document"
 Sec-Fetch-Dest: document
 </pre>